Cross-site Scripting (XSS) Affecting keep package, versions <0.51.0-r7


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.22% (13th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-KEEP-16698189
  • published15 May 2026
  • disclosed13 May 2026

Introduced: 13 May 2026

CVE-2026-44581  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Chainguard keep to version 0.51.0-r7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream keep package and not the keep package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Next.js is a React framework for building full-stack web applications. From 13.4.0 to before 15.5.16 and 16.2.5, App Router applications that rely on CSP nonces can be vulnerable to stored cross-site scripting when deployed behind shared caches. In affected versions, malformed nonce values derived from request headers could be reflected into rendered HTML in an unsafe way, allowing an attacker to poison cached responses and cause script execution for later visitors. This vulnerability is fixed in 15.5.16 and 16.2.5.

CVSS Base Scores

version 3.1