Improper Encoding or Escaping of Output Affecting langfuse-3 package, versions <3.224.1-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.35% (28th percentile)

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  • Snyk IDSNYK-WOLFILATEST-LANGFUSE3-18299385
  • published24 Jul 2026
  • disclosed27 Jul 2026

Introduced: 24 Jul 2026

CVE-2026-64647  (opens in a new tab)
CWE-116  (opens in a new tab)

How to fix?

Upgrade Wolfi langfuse-3 to version 3.224.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream langfuse-3 package and not the langfuse-3 package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a server-side fetch with a request body may return a cached response body from a different request to the same URL but different body. Confidential data in the POST's response body would then leak to unauthorized requests. Though the request itself will not be deduped. This is only an issue when receiving request bodies with a content type charset other than UTF-8. For example, the UTF-16 byte sequences for 삃삃 and 섄섄 in the request body would share the same cache. This issue has been fixed in versions 15.5.21 and 16.2.11.

CVSS Base Scores

version 3.1