CVE-2026-6322 Affecting prism package, versions <5.15.10-r1
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-CHAINGUARDLATEST-PRISM-16879800
- published27 May 2026
- disclosed5 May 2026
Introduced: 5 May 2026
NewCVE-2026-6322 (opens in a new tab)How to fix?
Upgrade Chainguard prism to version 5.15.10-r1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream prism package and not the prism package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
fast-uri normalize() decoded percent-encoded authority delimiters inside the host component and then re-emitted them as raw delimiters during serialization. A host that combined an allowed domain, an encoded at-sign, and a different domain was re-emitted with the at-sign as a raw userinfo separator, changing the URI's authority to the second domain. Applications that normalize untrusted URLs before host allowlist checks, redirect validation, or outbound request routing can be steered to a different authority than the input appeared to specify. Versions <= 3.1.1 are affected. Update to 3.1.2 or later.