CVE-2026-3857

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-3857", "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "state": "PUBLISHED", "assignerShortName": "GitLab", "dateReserved": "2026-03-09T21:03:55.281Z", "datePublished": "2026-03-25T16:33:53.854Z", "dateUpdated": "2026-03-26T13:20:03.781Z"}, "containers": {"cna": {"title": "Cross-Site Request Forgery (CSRF) in GitLab", "descriptions": [{"lang": "en", "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to execute arbitrary GraphQL mutations on behalf of authenticated users due to insufficient CSRF protection."}], "affected": [{"vendor": "GitLab", "product": "GitLab", "repo": "git://git@gitlab.com:gitlab-org/gitlab.git", "cpes": ["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"], "versions": [{"version": "17.10", "status": "affected", "lessThan": "18.8.7", "versionType": "semver"}, {"version": "18.9", "status": "affected", "lessThan": "18.9.3", "versionType": "semver"}, {"version": "18.10", "status": "affected", "lessThan": "18.10.1", "versionType": "semver"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-352: Cross-Site Request Forgery (CSRF)", "cweId": "CWE-352", "type": "CWE"}]}], "references": [{"url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/592828"}, {"url": "https://hackerone.com/reports/3584382", "name": "HackerOne Bug Bounty Report #3584382", "tags": ["technical-description", "exploit", "permissions-required"]}, {"url": "https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH"}}], "solutions": [{"lang": "en", "value": "Upgrade to versions 18.8.7, 18.9.3, 18.10.1 or above."}], "credits": [{"lang": "en", "value": "Thanks [ahacker1](https://hackerone.com/ahacker1) for reporting this vulnerability through our HackerOne bug bounty program", "type": "finder"}], "providerMetadata": {"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "shortName": "GitLab", "dateUpdated": "2026-03-25T16:33:53.854Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-26T03:55:34.505033Z", "id": "CVE-2026-3857", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-26T13:20:03.781Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-3857", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-03-26T03:55:34.505033Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-26T13:20:00.477Z"}}], "cna": {"title": "Cross-Site Request Forgery (CSRF) in GitLab", "credits": [{"lang": "en", "type": "finder", "value": "Thanks [ahacker1](https://hackerone.com/ahacker1) for reporting this vulnerability through our HackerOne bug bounty program"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"cpes": ["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"], "repo": "git://git@gitlab.com:gitlab-org/gitlab.git", "vendor": "GitLab", "product": "GitLab", "versions": [{"status": "affected", "version": "17.10", "lessThan": "18.8.7", "versionType": "semver"}, {"status": "affected", "version": "18.9", "lessThan": "18.9.3", "versionType": "semver"}, {"status": "affected", "version": "18.10", "lessThan": "18.10.1", "versionType": "semver"}], "defaultStatus": "unaffected"}], "solutions": [{"lang": "en", "value": "Upgrade to versions 18.8.7, 18.9.3, 18.10.1 or above."}], "references": [{"url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/592828"}, {"url": "https://hackerone.com/reports/3584382", "name": "HackerOne Bug Bounty Report #3584382", "tags": ["technical-description", "exploit", "permissions-required"]}, {"url": "https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/"}], "descriptions": [{"lang": "en", "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to execute arbitrary GraphQL mutations on behalf of authenticated users due to insufficient CSRF protection."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-352", "description": "CWE-352: Cross-Site Request Forgery (CSRF)"}]}], "providerMetadata": {"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "shortName": "GitLab", "dateUpdated": "2026-03-25T16:33:53.854Z"}}}, "cveMetadata": {"cveId": "CVE-2026-3857", "state": "PUBLISHED", "dateUpdated": "2026-03-26T13:20:03.781Z", "dateReserved": "2026-03-09T21:03:55.281Z", "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "datePublished": "2026-03-25T16:33:53.854Z", "assignerShortName": "GitLab"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "product": "GitLab", "repo": "git://git@gitlab.com:gitlab-org/gitlab.git", "vendor": "GitLab", "versions": [{"lessThan": "18.8.7", "status": "affected", "version": "17.10", "versionType": "semver"}, {"lessThan": "18.9.3", "status": "affected", "version": "18.9", "versionType": "semver"}, {"lessThan": "18.10.1", "status": "affected", "version": "18.10", "versionType": "semver"}]}], "source": "cve@gitlab.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*", "matchCriteriaId": "A562894A-828C-4621-85AD-6721BD73EEBE", "versionEndExcluding": "18.8.7", "versionStartIncluding": "17.10.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*", "matchCriteriaId": "F87F2721-57D2-47B3-8B6C-D7C27720E50D", "versionEndExcluding": "18.8.7", "versionStartIncluding": "17.10.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*", "matchCriteriaId": "96F7E7EC-4C2E-4A48-8134-9262B251C89C", "versionEndExcluding": "18.9.3", "versionStartIncluding": "18.9.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*", "matchCriteriaId": "C3240349-67A3-43E2-BAD9-EFAA3E0A5D31", "versionEndExcluding": "18.9.3", "versionStartIncluding": "18.9.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:gitlab:gitlab:18.10.0:*:*:*:community:*:*:*", "matchCriteriaId": "D5B6ECC9-6AEA-4DD0-B12B-A3A7A9FE91DA", "vulnerable": true}, {"criteria": "cpe:2.3:a:gitlab:gitlab:18.10.0:*:*:*:enterprise:*:*:*", "matchCriteriaId": "2B8DF779-B99E-4096-B734-78AB1849D136", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to execute arbitrary GraphQL mutations on behalf of authenticated users due to insufficient CSRF protection."}, {"lang": "es", "value": "GitLab ha remediado un problema en GitLab CE/EE que afecta a todas las versiones desde la 17.10 anterior a la 18.8.7, la 18.9 anterior a la 18.9.3 y la 18.10 anterior a la 18.10.1 que podr\u00eda haber permitido a un usuario no autenticado ejecutar mutaciones GraphQL arbitrarias en nombre de usuarios autenticados debido a una protecci\u00f3n CSRF insuficiente."}], "id": "CVE-2026-3857", "lastModified": "2026-06-17T10:44:20.953", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "cve@gitlab.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-3857", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-26T03:55:34.505033Z", "version": "2.0.3"}}]}, "published": "2026-03-25T17:17:09.387", "references": [{"source": "cve@gitlab.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/"}, {"source": "cve@gitlab.com", "tags": ["Broken Link"], "url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/592828"}, {"source": "cve@gitlab.com", "tags": ["Permissions Required"], "url": "https://hackerone.com/reports/3584382"}], "sourceIdentifier": "cve@gitlab.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-352"}], "source": "cve@gitlab.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[17.10,18.8.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[18.9,18.9.3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[18.10,18.10.1)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "GitLab", "source": "cna", "vendor": "GitLab"}, "product": "gitlab", "vendor": "gitlab"}], "analysis": {"en": {"generated_at": "2026-03-30T18:32:36.946968+00:00", "value": {"mitigation_remediation": ["Upgrade GitLab to version\u202f18.8.7,\u202f18.9.3,\u202for\u202f18.10.1 or later to apply the vendor\u2011provided patch.", "Verify the installed GitLab version to confirm that the patch has been applied.", "If an immediate upgrade is not possible, block unauthenticated access to the GraphQL endpoint using network or application\u2011level controls, ensuring only properly authenticated requests are accepted.", "After remediation, audit logs for suspicious GraphQL activity to detect any prior exploitation attempts."], "summary": {"action": "Patch Immediately", "impact": "CSRF-enabled arbitrary GraphQL mutation execution"}, "threat_synthesis": {"affected_systems": "The issue affects all GitLab Community Edition and Enterprise Edition releases from 17.10 up to, but excluding, versions 18.8.7, 18.9.3, and 18.10.1. This includes the 17.10\u201118.8.6 series, the 18.9\u201118.9.2 series, and the 18.10\u201118.10.0 series. Only patches beginning with 18.8.7, 18.9.3, or 18.10.1 in the respective branches remove the weakness.", "description_and_impact": "A flaw in GitLab\u2019s GraphQL API implements insufficient Cross\u2011Site Request Forgery protection, classified as CWE-352, allowing an unauthenticated attacker to trigger any GraphQL mutation on behalf of an authenticated user. The vulnerability enables the attacker to read, modify, or delete data that the victim is authorized to access, compromising both data confidentiality and integrity.", "risk_and_exploitability": "The CVSS v3.1 score of 8.1 indicates high severity, but the EPSS score is below 1\u202f%, suggesting a low likelihood of current exploitation. The vulnerability is not listed in the CISA KEV catalog. The attack vector is inferred to be a malicious URL or embedded script that coerces the victim\u2019s browser into sending an authenticated GraphQL request without a valid CSRF token, thereby executing the attacker\u2019s chosen mutation."}}}}, "created": "2026-03-25T21:46:54.230392+00:00", "updated": "2026-03-30T20:58:00.486632+00:00", "vendors": ["gitlab", "gitlab$PRODUCT$gitlab"]}