Incorrect Behavior Order: Validate Before Canonicalize Affecting guzzlehttp/guzzle package, versions <7.15.2>=8.0.0, <8.0.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-GUZZLEHTTPGUZZLE-18543681
- published5 Aug 2026
- disclosed4 Aug 2026
- creditbilguunbicktivism
Introduced: 4 Aug 2026
NewCVE-2026-69246 (opens in a new tab)How to fix?
Upgrade guzzlehttp/guzzle to version 7.15.2, 8.0.1 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Behavior Order: Validate Before Canonicalize via the request URI handling. An attacker can access resources on hosts that should have been excluded by bypassing host-based access controls through manipulation of noncanonical host representations.
Note: This is only exploitable if the application constructs a request URI from untrusted input and performs host validation before passing it to the HTTP client.