CVE-2026-9080

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-9080", "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9", "state": "PUBLISHED", "assignerShortName": "curl", "dateReserved": "2026-05-20T12:59:50.588Z", "datePublished": "2026-07-03T06:17:34.905Z", "dateUpdated": "2026-09-15T06:03:30.239Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "2499f714-1537-4658-8207-48ae4bb9eae9", "shortName": "curl", "dateUpdated": "2026-09-15T06:03:30.239Z"}, "title": "UAF after pause in socket callback", "descriptions": [{"lang": "en", "value": "Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION`\ncallback triggers a use-after-free vulnerability, where libcurl attempts to\nstore a flag using a dangling struct pointer immediately after that pointer's\nmemory has been freed."}], "affected": [{"vendor": "curl", "product": "curl", "versions": [{"version": "8.13.0", "status": "affected", "versionType": "semver", "lessThan": "8.14.2"}, {"version": "8.15.0", "status": "affected", "versionType": "semver", "lessThan": "8.16.1"}, {"version": "8.17.0", "status": "affected", "versionType": "semver", "lessThan": "8.20.1"}], "defaultStatus": "unaffected"}, {"vendor": "curl", "product": "curl", "versions": [{"version": "cfc657a48dbafb4194676d4c9d841388b3a22210", "status": "affected", "versionType": "git", "lessThan": "5ab34cba42e4ee4282fe8bab43f311d51b9bf9bd"}], "defaultStatus": "unaffected", "repo": "https://github.com/curl/curl.git"}, {"vendor": "curl", "product": "curl", "versions": [{"version": "8.20.0", "status": "affected"}, {"version": "8.19.0", "status": "affected"}, {"version": "8.18.0", "status": "affected"}, {"version": "8.17.0", "status": "affected"}, {"version": "8.16.0", "status": "affected"}, {"version": "8.15.0", "status": "affected"}, {"version": "8.14.1", "status": "affected"}, {"version": "8.14.0", "status": "affected"}, {"version": "8.13.0", "status": "affected"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://curl.se/docs/CVE-2026-9080.json"}, {"url": "https://curl.se/docs/CVE-2026-9080.html"}, {"url": "https://hackerone.com/reports/3749204"}], "x_osv": {"schema_version": "1.5.0", "id": "CURL-CVE-2026-9080", "aliases": ["CVE-2026-9080"], "summary": "UAF after pause in socket callback", "modified": "2026-09-07T10:34:51.00Z", "database_specific": {"package": "curl", "affects": "lib", "URL": "https://curl.se/docs/CVE-2026-9080.json", "www": "https://curl.se/docs/CVE-2026-9080.html", "issue": "https://hackerone.com/reports/3749204", "CWE": {"id": "CWE-416", "desc": "Use After Free"}, "last_affected": "8.20.0", "severity": "Low"}, "published": "2026-06-24T08:00:00.00Z", "affected": [{"ranges": [{"type": "SEMVER", "events": [{"introduced": "8.13.0"}, {"fixed": "8.14.2"}, {"introduced": "8.15.0"}, {"fixed": "8.16.1"}, {"introduced": "8.17.0"}, {"fixed": "8.20.1"}]}, {"type": "GIT", "repo": "https://github.com/curl/curl.git", "events": [{"introduced": "cfc657a48dbafb4194676d4c9d841388b3a22210"}, {"fixed": "5ab34cba42e4ee4282fe8bab43f311d51b9bf9bd"}]}], "versions": ["8.20.0", "8.19.0", "8.18.0", "8.17.0", "8.16.0", "8.15.0", "8.14.1", "8.14.0", "8.13.0"]}], "credits": [{"name": "Joshua Rogers (Aisle Research)", "type": "finder"}, {"name": "Joshua Rogers (Aisle Research)", "type": "remediation developer"}, {"name": "Daniel Stenberg", "type": "remediation developer"}], "details": "Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION`\ncallback triggers a use-after-free vulnerability, where libcurl attempts to\nstore a flag using a dangling struct pointer immediately after that pointer's\nmemory has been freed."}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "Use After Free", "cweId": "CWE-416", "type": "CWE"}]}], "credits": [{"lang": "en", "value": "Joshua Rogers (Aisle Research)", "type": "finder"}, {"lang": "en", "value": "Joshua Rogers (Aisle Research)", "type": "remediation developer"}, {"lang": "en", "value": "Daniel Stenberg", "type": "remediation developer"}], "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"references": [{"url": "https://hackerone.com/reports/3749204", "tags": ["exploit"]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.3, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-07-06T16:54:41.919630Z", "id": "CVE-2026-9080", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-06T16:55:16.890Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.3, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-9080", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-06T16:54:41.919630Z"}}}], "references": [{"url": "https://hackerone.com/reports/3749204", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-06T16:55:13.076Z"}}], "cna": {"title": "UAF after pause in socket callback", "x_osv": {"id": "CURL-CVE-2026-9080", "aliases": ["CVE-2026-9080"], "credits": [{"name": "Joshua Rogers (Aisle Research)", "type": "finder"}, {"name": "Joshua Rogers (Aisle Research)", "type": "remediation developer"}, {"name": "Daniel Stenberg", "type": "remediation developer"}], "details": "Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION`\ncallback triggers a use-after-free vulnerability, where libcurl attempts to\nstore a flag using a dangling struct pointer immediately after that pointer's\nmemory has been freed.", "summary": "UAF after pause in socket callback", "affected": [{"ranges": [{"type": "SEMVER", "events": [{"introduced": "8.13.0"}, {"fixed": "8.14.2"}, {"introduced": "8.15.0"}, {"fixed": "8.16.1"}, {"introduced": "8.17.0"}, {"fixed": "8.20.1"}]}, {"repo": "https://github.com/curl/curl.git", "type": "GIT", "events": [{"introduced": "cfc657a48dbafb4194676d4c9d841388b3a22210"}, {"fixed": "5ab34cba42e4ee4282fe8bab43f311d51b9bf9bd"}]}], "versions": ["8.20.0", "8.19.0", "8.18.0", "8.17.0", "8.16.0", "8.15.0", "8.14.1", "8.14.0", "8.13.0"]}], "modified": "2026-09-07T10:34:51.00Z", "published": "2026-06-24T08:00:00.00Z", "schema_version": "1.5.0", "database_specific": {"CWE": {"id": "CWE-416", "desc": "Use After Free"}, "URL": "https://curl.se/docs/CVE-2026-9080.json", "www": "https://curl.se/docs/CVE-2026-9080.html", "issue": "https://hackerone.com/reports/3749204", "affects": "lib", "package": "curl", "severity": "Low", "last_affected": "8.20.0"}}, "credits": [{"lang": "en", "type": "finder", "value": "Joshua Rogers (Aisle Research)"}, {"lang": "en", "type": "remediation developer", "value": "Joshua Rogers (Aisle Research)"}, {"lang": "en", "type": "remediation developer", "value": "Daniel Stenberg"}], "affected": [{"vendor": "curl", "product": "curl", "versions": [{"status": "affected", "version": "8.13.0", "lessThan": "8.14.2", "versionType": "semver"}, {"status": "affected", "version": "8.15.0", "lessThan": "8.16.1", "versionType": "semver"}, {"status": "affected", "version": "8.17.0", "lessThan": "8.20.1", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"repo": "https://github.com/curl/curl.git", "vendor": "curl", "product": "curl", "versions": [{"status": "affected", "version": "cfc657a48dbafb4194676d4c9d841388b3a22210", "lessThan": "5ab34cba42e4ee4282fe8bab43f311d51b9bf9bd", "versionType": "git"}], "defaultStatus": "unaffected"}, {"vendor": "curl", "product": "curl", "versions": [{"status": "affected", "version": "8.20.0"}, {"status": "affected", "version": "8.19.0"}, {"status": "affected", "version": "8.18.0"}, {"status": "affected", "version": "8.17.0"}, {"status": "affected", "version": "8.16.0"}, {"status": "affected", "version": "8.15.0"}, {"status": "affected", "version": "8.14.1"}, {"status": "affected", "version": "8.14.0"}, {"status": "affected", "version": "8.13.0"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://curl.se/docs/CVE-2026-9080.json"}, {"url": "https://curl.se/docs/CVE-2026-9080.html"}, {"url": "https://hackerone.com/reports/3749204"}], "x_generator": {"engine": "cvelib 1.8.0"}, "descriptions": [{"lang": "en", "value": "Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION`\ncallback triggers a use-after-free vulnerability, where libcurl attempts to\nstore a flag using a dangling struct pointer immediately after that pointer's\nmemory has been freed."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "Use After Free"}]}], "providerMetadata": {"orgId": "2499f714-1537-4658-8207-48ae4bb9eae9", "shortName": "curl", "dateUpdated": "2026-09-15T06:03:30.239Z"}}}, "cveMetadata": {"cveId": "CVE-2026-9080", "state": "PUBLISHED", "dateUpdated": "2026-09-15T06:03:30.239Z", "dateReserved": "2026-05-20T12:59:50.588Z", "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9", "datePublished": "2026-07-03T06:17:34.905Z", "assignerShortName": "curl"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "curl", "vendor": "curl", "versions": [{"lessThan": "8.14.2", "status": "affected", "version": "8.13.0", "versionType": "semver"}, {"lessThan": "8.16.1", "status": "affected", "version": "8.15.0", "versionType": "semver"}, {"lessThan": "8.20.1", "status": "affected", "version": "8.17.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "curl", "repo": "https://github.com/curl/curl.git", "vendor": "curl", "versions": [{"lessThan": "5ab34cba42e4ee4282fe8bab43f311d51b9bf9bd", "status": "affected", "version": "cfc657a48dbafb4194676d4c9d841388b3a22210", "versionType": "git"}]}, {"defaultStatus": "unaffected", "product": "curl", "vendor": "curl", "versions": [{"status": "affected", "version": "8.20.0"}, {"status": "affected", "version": "8.19.0"}, {"status": "affected", "version": "8.18.0"}, {"status": "affected", "version": "8.17.0"}, {"status": "affected", "version": "8.16.0"}, {"status": "affected", "version": "8.15.0"}, {"status": "affected", "version": "8.14.1"}, {"status": "affected", "version": "8.14.0"}, {"status": "affected", "version": "8.13.0"}]}], "source": "2499f714-1537-4658-8207-48ae4bb9eae9"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*", "matchCriteriaId": "C87B09EB-4326-4209-9055-93BEE0676194", "versionEndExcluding": "8.21.0", "versionStartIncluding": "8.13.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION`\ncallback triggers a use-after-free vulnerability, where libcurl attempts to\nstore a flag using a dangling struct pointer immediately after that pointer's\nmemory has been freed."}], "id": "CVE-2026-9080", "lastModified": "2026-09-15T07:16:34.767", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-9080", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-06T16:54:41.919630Z", "version": "2.0.3"}}]}, "published": "2026-07-03T07:16:25.713", "references": [{"source": "2499f714-1537-4658-8207-48ae4bb9eae9", "tags": ["Patch", "Vendor Advisory"], "url": "https://curl.se/docs/CVE-2026-9080.html"}, {"source": "2499f714-1537-4658-8207-48ae4bb9eae9", "tags": ["Vendor Advisory"], "url": "https://curl.se/docs/CVE-2026-9080.json"}, {"source": "2499f714-1537-4658-8207-48ae4bb9eae9", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://hackerone.com/reports/3749204"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://hackerone.com/reports/3749204"}], "sourceIdentifier": "2499f714-1537-4658-8207-48ae4bb9eae9", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "2499f714-1537-4658-8207-48ae4bb9eae9", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "libcurl: libcurl: Use-after-free via curl_easy_pause() in CURLMOPT_SOCKETFUNCTION callback", "id": "2496755", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2496755"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "status": "draft"}, "cwe": "CWE-825", "details": ["Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION`\ncallback triggers a use-after-free vulnerability, where libcurl attempts to\nstore a flag using a dangling struct pointer immediately after that pointer's\nmemory has been freed.", "A flaw was found in libcurl. When `curl_easy_pause()` is called within the event-based `CURLMOPT_SOCKETFUNCTION` callback, a use-after-free vulnerability is triggered. This occurs because libcurl attempts to store a flag using a pointer to memory that has already been freed. An attacker could potentially exploit this to cause a denial of service or execute arbitrary code."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2026-9080", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "dotnet8.0", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "curl", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "rust", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:jboss_core_services:1", "fix_state": "Affected", "package_name": "libcurl-1.dll", "product_name": "Red Hat JBoss Core Services"}, {"cpe": "cpe:/a:redhat:jboss_core_services:1", "fix_state": "Affected", "package_name": "libcurl.so", "product_name": "Red Hat JBoss Core Services"}], "public_date": "2026-07-03T06:17:34Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-9080\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-9080\nhttps://curl.se/docs/CVE-2026-9080.html\nhttps://curl.se/docs/CVE-2026-9080.json\nhttps://hackerone.com/reports/3749204"], "statement": "This Important flaw in libcurl stems from a use-after-free vulnerability when `curl_easy_pause()` is called within the `CURLMOPT_SOCKETFUNCTION` callback. This could allow an attacker to achieve denial of service or arbitrary code execution without requiring user interaction or elevated privileges. While dependent on a specific application implementation, the broad adoption of libcurl means Red Hat products leveraging this callback pattern could be affected.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.20.0,8.20.0]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.19.0,8.19.0]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.18.0,8.18.0]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.17.0,8.17.0]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.16.0,8.16.0]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.15.0,8.15.0]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.14.1,8.14.1]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.14.0,8.14.0]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.13.0,8.13.0]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "curl", "source": "cna", "vendor": "curl"}, "product": "curl", "vendor": "curl"}], "created": "2026-07-03T07:45:03.409610+00:00", "updated": "2026-08-13T12:30:10.772593+00:00", "vendors": ["curl", "curl$PRODUCT$curl"]}