Algorithmic Complexity Affecting snuba package, versions <26.10.1-r2


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.43% (37th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-SNUBA-22111084
  • published1 Nov 2026
  • disclosed29 Oct 2026

Introduced: 29 Oct 2026

NewCVE-2026-119194  (opens in a new tab)
CWE-407  (opens in a new tab)

How to fix?

Upgrade Chainguard snuba to version 26.10.1-r2 or higher.

NVD Description

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

pyasn1 is a generic ASN.1 library for Python. From 0.3.3 until 0.6.5, schemaless container decoding stores every decoded component's TagSet in a growing set even though only one-versus-multiple tag types must be distinguished. Attacker-controlled BER, CER, or DER input contains many distinct long tag IDs whose TagSet hashes collide. Each later set insertion compares against an increasing number of earlier colliding tags in ConstructedPayloadDecoderBase._decodeComponentsSchemaless, producing quadratic CPU work while decoded values and order remain valid. Repeated inputs can exhaust decoder CPU and reduce service availability. This issue is fixed in version 0.6.5.

CVSS Base Scores

version 3.1