CVE-2026-69246
- Source
- https://cve.org/CVERecord?id=CVE-2026-69246
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-69246.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-69246
- Aliases
- Downstream
CGA (8)
DEBIAN (1)
MINI (6)
UBUNTU (1)
- Published
- 2026-08-03T21:07:04Z
- Modified
- 2026-10-21T02:59:05Z
- Severity
-
- 7.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N CVSS Calculator
- Summary
- Guzzle: Noncanonical host can bypass host-based checks
- Details
-
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.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-180", "CWE-436", "CWE-918", "CWE-941" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/69xxx/CVE-2026-69246.json" }- References
-
- https://github.com/guzzle/guzzle/releases/tag/7.15.2
- https://github.com/guzzle/guzzle/releases/tag/8.0.1
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/69xxx/CVE-2026-69246.json
- https://github.com/guzzle/guzzle/security/advisories/GHSA-v5mv-p594-2x33
- https://nvd.nist.gov/vuln/detail/CVE-2026-69246
- https://github.com/guzzle/guzzle/commit/3aeea0406aab88cbbd86531313d7cebf8ae149a4
- https://github.com/guzzle/guzzle/commit/744101956d78b7c1384d0cbf379db13e859167bf
- https://github.com/guzzle/guzzle/pull/3907
- https://github.com/guzzle/guzzle/pull/3908
Affected packages
Git / github.com/guzzle/guzzle
Affected ranges
- Type
- GIT
- Repo
- https://github.com/guzzle/guzzle
- Events
-
IntroducedFixedIntroduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "8.0.0" }, { "fixed": "8.0.1" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "introduced": "0" }, { "fixed": "7.15.2" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "3aeea0406aab88cbbd86531313d7cebf8ae149a4" } ], "source": "REFERENCES_COMMIT" }, { "range": [ { "fixed": "744101956d78b7c1384d0cbf379db13e859167bf" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "7.15.2", "range": [ { "fixed": "744101956d78b7c1384d0cbf379db13e859167bf" } ], "source": "REFERENCES_TAG" }, { "original_tag": "8.0.1", "range": [ { "fixed": "3aeea0406aab88cbbd86531313d7cebf8ae149a4" } ], "source": "REFERENCES_TAG" } ] }