CVE-2025-68131

HIGH

7.5

Description

cbor2 provides encoding and decoding for the Concise Binary Object Representation (CBOR) serialization format. Starting in version 3.0.0 and prior to version 5.8.0, whhen a CBORDecoder instance is reused across multiple decode operations, values marked with the shareable tag (28) persist in memory and can be accessed by subsequent CBOR messages using the sharedref tag (29). This allows an attacker-controlled message to read data from previously decoded messages if the decoder is reused across trust boundaries. Version 5.8.0 patches the issue.

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie12/31/2025

Derniere modification1/2/2026

Sourcenvd

Observations honeypot0

Produits affectes

agronholm:cbor2

Faiblesses (CWE)

CWE-212

References

https://github.com/agronholm/cbor2/pull/268(security-advisories@github.com)

https://github.com/agronholm/cbor2/security/advisories/GHSA-wcj4-jw5j-44wh(security-advisories@github.com)

https://github.com/agronholm/cbor2/security/advisories/GHSA-wcj4-jw5j-44wh(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlations IOC

Aucune correlation enregistree

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