CVE-2026-69246

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-69246", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-03T19:54:19.852Z", "datePublished": "2026-08-03T21:07:04.228Z", "dateUpdated": "2026-08-04T14:06:40.238Z"}, "containers": {"cna": {"title": "Guzzle: Noncanonical host can bypass host-based checks", "problemTypes": [{"descriptions": [{"cweId": "CWE-180", "lang": "en", "description": "CWE-180: Incorrect Behavior Order: Validate Before Canonicalize", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-436", "lang": "en", "description": "CWE-436: Interpretation Conflict", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-918", "lang": "en", "description": "CWE-918: Server-Side Request Forgery (SSRF)", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-941", "lang": "en", "description": "CWE-941: Incorrectly Specified Destination in a Communication Channel", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.2, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/guzzle/guzzle/security/advisories/GHSA-v5mv-p594-2x33", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/guzzle/guzzle/security/advisories/GHSA-v5mv-p594-2x33"}, {"name": "https://github.com/guzzle/guzzle/pull/3907", "tags": ["x_refsource_MISC"], "url": "https://github.com/guzzle/guzzle/pull/3907"}, {"name": "https://github.com/guzzle/guzzle/pull/3908", "tags": ["x_refsource_MISC"], "url": "https://github.com/guzzle/guzzle/pull/3908"}, {"name": "https://github.com/guzzle/guzzle/commit/3aeea0406aab88cbbd86531313d7cebf8ae149a4", "tags": ["x_refsource_MISC"], "url": "https://github.com/guzzle/guzzle/commit/3aeea0406aab88cbbd86531313d7cebf8ae149a4"}, {"name": "https://github.com/guzzle/guzzle/commit/744101956d78b7c1384d0cbf379db13e859167bf", "tags": ["x_refsource_MISC"], "url": "https://github.com/guzzle/guzzle/commit/744101956d78b7c1384d0cbf379db13e859167bf"}, {"name": "https://github.com/guzzle/guzzle/releases/tag/7.15.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/guzzle/guzzle/releases/tag/7.15.2"}, {"name": "https://github.com/guzzle/guzzle/releases/tag/8.0.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/guzzle/guzzle/releases/tag/8.0.1"}], "affected": [{"vendor": "guzzle", "product": "guzzle", "versions": [{"version": ">= 8.0.0, < 8.0.1", "status": "affected"}, {"version": "< 7.15.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-03T21:07:04.228Z"}, "descriptions": [{"lang": "en", "value": "Guzzle is an extensible PHP HTTP client. Prior to 7.15.2 and 8.0.1, Guzzle gives a transport the request URI as text and supplies the Host header separately. The cURL handlers set CURLOPT_URL to the URI exactly as written and push that Host into CURLOPT_HTTPHEADER; StreamHandler does the same through fopen(). libcurl then parses the authority itself, percent-decoding it and, on an IDN-capable build, applying IDNA mapping, and uses the result to resolve, connect, name the TLS peer and address a proxy CONNECT, while the supplied Host suppresses the aligned one libcurl would have generated. For a URI host written as 127.0.0.%31, filter_var() rejects the host as an IP literal, yet libcurl decodes it to 127.0.0.1 and reaches loopback with no DNS lookup while the server receives Host: 127.0.0.%31. An attacker who influences a fetched URI can therefore reach a host the application's checks excluded and read whatever the host exposes of the response. The same divergence moves Guzzle's own decisions onto a spelling the transport does not use: no_proxy selects proxy routing from the literal host, and RedirectMiddleware decides from it whether to strip Authorization and Cookie. Exploitation requires the application to build a request URI from untrusted input and to make a host decision before handing it to Guzzle. This issue is fixed in versions 7.15.2 and 8.0.1."}], "source": {"advisory": "GHSA-v5mv-p594-2x33", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-04T14:06:26.614857Z", "id": "CVE-2026-69246", "options": [{"Exploitation": "none"}, {"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": "2026-08-04T14:06:40.238Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"cna": {"title": "Guzzle: Noncanonical host can bypass host-based checks", "source": {"advisory": "GHSA-v5mv-p594-2x33", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}], "affected": [{"vendor": "guzzle", "product": "guzzle", "versions": [{"status": "affected", "version": ">= 8.0.0, < 8.0.1"}, {"status": "affected", "version": "< 7.15.2"}]}], "references": [{"url": "https://github.com/guzzle/guzzle/security/advisories/GHSA-v5mv-p594-2x33", "name": "https://github.com/guzzle/guzzle/security/advisories/GHSA-v5mv-p594-2x33", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/guzzle/guzzle/pull/3907", "name": "https://github.com/guzzle/guzzle/pull/3907", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/guzzle/guzzle/pull/3908", "name": "https://github.com/guzzle/guzzle/pull/3908", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/guzzle/guzzle/commit/3aeea0406aab88cbbd86531313d7cebf8ae149a4", "name": "https://github.com/guzzle/guzzle/commit/3aeea0406aab88cbbd86531313d7cebf8ae149a4", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/guzzle/guzzle/commit/744101956d78b7c1384d0cbf379db13e859167bf", "name": "https://github.com/guzzle/guzzle/commit/744101956d78b7c1384d0cbf379db13e859167bf", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/guzzle/guzzle/releases/tag/7.15.2", "name": "https://github.com/guzzle/guzzle/releases/tag/7.15.2", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/guzzle/guzzle/releases/tag/8.0.1", "name": "https://github.com/guzzle/guzzle/releases/tag/8.0.1", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Guzzle is an extensible PHP HTTP client. Prior to 7.15.2 and 8.0.1, Guzzle gives a transport the request URI as text and supplies the Host header separately. The cURL handlers set CURLOPT_URL to the URI exactly as written and push that Host into CURLOPT_HTTPHEADER; StreamHandler does the same through fopen(). libcurl then parses the authority itself, percent-decoding it and, on an IDN-capable build, applying IDNA mapping, and uses the result to resolve, connect, name the TLS peer and address a proxy CONNECT, while the supplied Host suppresses the aligned one libcurl would have generated. For a URI host written as 127.0.0.%31, filter_var() rejects the host as an IP literal, yet libcurl decodes it to 127.0.0.1 and reaches loopback with no DNS lookup while the server receives Host: 127.0.0.%31. An attacker who influences a fetched URI can therefore reach a host the application's checks excluded and read whatever the host exposes of the response. The same divergence moves Guzzle's own decisions onto a spelling the transport does not use: no_proxy selects proxy routing from the literal host, and RedirectMiddleware decides from it whether to strip Authorization and Cookie. Exploitation requires the application to build a request URI from untrusted input and to make a host decision before handing it to Guzzle. This issue is fixed in versions 7.15.2 and 8.0.1."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-180", "description": "CWE-180: Incorrect Behavior Order: Validate Before Canonicalize"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-436", "description": "CWE-436: Interpretation Conflict"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-918", "description": "CWE-918: Server-Side Request Forgery (SSRF)"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-941", "description": "CWE-941: Incorrectly Specified Destination in a Communication Channel"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-03T21:07:04.228Z"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-69246", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-04T14:06:26.614857Z"}}}], "providerMetadata": {"shortName": "CISA-ADP", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "dateUpdated": "2026-08-04T14:06:36.233Z"}}]}, "cveMetadata": {"cveId": "CVE-2026-69246", "state": "PUBLISHED", "dateUpdated": "2026-08-03T21:07:04.228Z", "dateReserved": "2026-08-03T19:54:19.852Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-08-03T21:07:04.228Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "guzzle", "vendor": "guzzle", "versions": [{"status": "affected", "version": ">= 8.0.0, < 8.0.1"}, {"status": "affected", "version": "< 7.15.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Guzzle is an extensible PHP HTTP client. Prior to 7.15.2 and 8.0.1, Guzzle gives a transport the request URI as text and supplies the Host header separately. The cURL handlers set CURLOPT_URL to the URI exactly as written and push that Host into CURLOPT_HTTPHEADER; StreamHandler does the same through fopen(). libcurl then parses the authority itself, percent-decoding it and, on an IDN-capable build, applying IDNA mapping, and uses the result to resolve, connect, name the TLS peer and address a proxy CONNECT, while the supplied Host suppresses the aligned one libcurl would have generated. For a URI host written as 127.0.0.%31, filter_var() rejects the host as an IP literal, yet libcurl decodes it to 127.0.0.1 and reaches loopback with no DNS lookup while the server receives Host: 127.0.0.%31. An attacker who influences a fetched URI can therefore reach a host the application's checks excluded and read whatever the host exposes of the response. The same divergence moves Guzzle's own decisions onto a spelling the transport does not use: no_proxy selects proxy routing from the literal host, and RedirectMiddleware decides from it whether to strip Authorization and Cookie. Exploitation requires the application to build a request URI from untrusted input and to make a host decision before handing it to Guzzle. This issue is fixed in versions 7.15.2 and 8.0.1."}], "id": "CVE-2026-69246", "lastModified": "2026-09-08T20:41:31.497", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.2, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.7, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-69246", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-04T14:06:26.614857Z", "version": "2.0.3"}}]}, "published": "2026-08-03T21:16:42.563", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/guzzle/guzzle/commit/3aeea0406aab88cbbd86531313d7cebf8ae149a4"}, {"source": "security-advisories@github.com", "url": "https://github.com/guzzle/guzzle/commit/744101956d78b7c1384d0cbf379db13e859167bf"}, {"source": "security-advisories@github.com", "url": "https://github.com/guzzle/guzzle/pull/3907"}, {"source": "security-advisories@github.com", "url": "https://github.com/guzzle/guzzle/pull/3908"}, {"source": "security-advisories@github.com", "url": "https://github.com/guzzle/guzzle/releases/tag/7.15.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/guzzle/guzzle/releases/tag/8.0.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/guzzle/guzzle/security/advisories/GHSA-v5mv-p594-2x33"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-180"}, {"lang": "en", "value": "CWE-436"}, {"lang": "en", "value": "CWE-918"}, {"lang": "en", "value": "CWE-941"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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