> CVE-2026-54787 [LOW]

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PUBLISHED
2026-07-31 23:17
MODIFIED
2026-07-31 23:17
CVSS_SCORE V3
3.1
EPSS (Prob. Exploit)
0.13%
Top 97.1%
DATA SOURCES:
NVD 🔗 2026-08-01 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-01 GITHUB 🔗 2026-10-29 OSV 🔗 2026-11-02 MSRC 🔗 2026-11-02

> DESCRIPTION

sigstore-go is a Go library for Sigstore signing and verification. Prior to 1.2.1, sigstore-go does not check a bundle signing timestamp against the validity window of an ExpiringKey wrapping a self-managed long-lived signing key without a certificate, which can allow an attacker holding expired key material to sign accepted bundles. This issue is fixed in version 1.2.1.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
EXPLOITABILITY
1.6
IMPACT
1.4

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
High (H)
Conditions spécifiques doivent être réunies pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
Low (L)
Modification limitée des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
Low
Modification limitée des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-324

> CWE DETAILED DESCRIPTIONS

CWE-324: Use of a Key Past its Expiration Date - The product uses a cryptographic key past its expiration date.

> GITHUB SECURITY ADVISORY

GHSA-wqqc-jjcq-vfxm LOW

sigstore-go fails to check signature timestamps against a signing key's validity period

AFFECTED PACKAGES:
GO / github.com/sigstore/sigstore-go
<= 1.2.0
Fixed in: 1.2.1

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

sigstore-go fails to check signature timestamps against a signing key's validity period

AFFECTED PACKAGES:
Unknown / Unknown
20 versions affected
ALIASES:
GHSA-wqqc-jjcq-vfxm, GO-2026-6162

> HISTORIQUE DES MODIFICATIONS

Première apparition
31/07/2026 23:17
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-324: Use of a Key Past its Expiration Date - The product uses a cryptographic key or password past its expiration date, which diminishes its safety significantly by increasing the timing window fo...
Nouvelle valeur:
CWE-324: Use of a Key Past its Expiration Date - The product uses a cryptographic key past its expiration date.
📊 ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-324: Use of a Key Past its Expiration Date - The product uses a cryptographic key or password past its expiration date, which diminishes its safety significantly by increasing the timing window fo...
Total des modifications: 2 Dernière mise à jour: 3 days ago

> REFERENCES

https://github.com/sigstore/sigstore-go/commit/4594ab4c779d08be1f4419803a8249188...
https://github.com/sigstore/sigstore-go/pull/642
https://github.com/sigstore/sigstore-go/releases/tag/v1.2.1
https://github.com/sigstore/sigstore-go/security/advisories/GHSA-wqqc-jjcq-vfxm
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