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
0.53% (45th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-SNUBA-22111077
  • published1 Nov 2026
  • disclosed29 Oct 2026

Introduced: 29 Oct 2026

NewCVE-2026-119195  (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. Prior to 0.6.5, constructed string and indefinite-length ANY decoding repeatedly concatenates each fragment onto a growing bytes value. Attacker-controlled BER or CER data can use many constructed OCTET STRING or character-string fragments. DER rejects constructed OCTET STRING without a schema, but accepts its definite-length form when asn1Spec selects univ.OctetString; it also accepts constructed character strings such as UTF8String without a schema, even though those encodings are not valid DER. The separate indefinite-length ANY path is reachable in BER and CER when asn1Spec selects univ.Any; DER rejects indefinite lengths. OctetStringPayloadDecoder uses growing header concatenation and AnyPayloadDecoder.indefLenValueDecoder uses growing chunk concatenation, repeatedly copying an increasing prefix and causing quadratic work. A sufficiently fragmented value can occupy decoding workers and cause CPU exhaustion without confidentiality or integrity impact. This issue is fixed in version 0.6.5.

CVSS Base Scores

version 3.1