Improper Validation of Integrity Check Value Affecting pixi package, versions <0.84.0-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.15% (5th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-PIXI-22220104
  • published5 Nov 2026
  • disclosed26 Oct 2026

Introduced: 26 Oct 2026

NewCVE-2026-115906  (opens in a new tab)
CWE-354  (opens in a new tab)
CWE-1284  (opens in a new tab)

How to fix?

Upgrade Chainguard pixi to version 0.84.0-r0 or higher.

NVD Description

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

zip is a zip library for Rust that supports reading and writing simple ZIP files. From 0.6.0 until 9.0.0, the AES entry reader in src/aes.rs verifies its HMAC only when the attacker-controlled data counter reaches zero. If the underlying bounded reader reaches the real end of the archive while data_remaining is still positive, or if an encrypted entry has no payload, the reader can return a clean end of stream without reading and comparing the authentication tag. Applications using by_index_decrypt, by_name_decrypt, by_path_decrypt, or password-enabled by_index_with_options can therefore accept modified plaintext without an authentication error. This issue is fixed in version 9.0.0.

CVSS Base Scores

version 3.1