> CVE-2026-45793 [HIGH]

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PUBLISHED
2026-07-15 17:16
MODIFIED
2026-07-15 17:16
CVSS_SCORE V3
7.5
EPSS (Prob. Exploit)
1.02%
Top 36.6%
DATA SOURCES:
NVD đź”— 2026-07-15 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-11-01 GITHUB đź”— 2026-11-05 OSV đź”— 2026-10-12

> DESCRIPTION

Composer is a dependency Manager for the PHP language. Prior to 1.10.28, 2.2.28, and 2.9.8, Composer\IO\BaseIO::loadConfiguration() validates GitHub OAuth tokens with the regex ^[.A-Za-z0-9_]+$ and interpolates rejected tokens into an UnexpectedValueException; GitHub Actions GITHUB_TOKEN values using the ghs_<id>_<base64url-JWT> format can contain -, fail validation, and be disclosed to stderr or CI logs. This issue is fixed in versions 1.10.28, 2.2.28, and 2.9.8.

> 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:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EXPLOITABILITY
3.9
IMPACT
3.6

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
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
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-200

> CWE DETAILED DESCRIPTIONS

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor - The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

> GITHUB SECURITY ADVISORY

GHSA-f9f8-rm49-7jv2 HIGH

Github Actions issued GITHUB_TOKEN disclosure in GitHub Actions logs

AFFECTED PACKAGES:
COMPOSER / composer/composer
>= 1.0, < 1.10.28
Fixed in: 1.10.28
COMPOSER / composer/composer
>= 2.0.0, < 2.2.28
Fixed in: 2.2.28
COMPOSER / composer/composer
>= 2.3.0, < 2.9.8
Fixed in: 2.9.8

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Composer: Github Actions issued GITHUB_TOKEN disclosure in GitHub Actions logs

AFFECTED PACKAGES:
Unknown / Unknown
47 versions affected
ALIASES:
BIT-composer-2026-45793, GHSA-f9f8-rm49-7jv2

> HISTORIQUE DES MODIFICATIONS

Première apparition
15/07/2026 17:16
Source: NVD
📊 ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor - The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
Total des modifications: 1 Dernière mise à jour: 3 months ago

> REFERENCES

https://github.com/composer/composer/commit/3f5e7f9fbfa541137d6d1d5643ec3b718e9d...
https://github.com/composer/composer/commit/65e6390c49f1a11cd8b660d81822086db51f...
https://github.com/composer/composer/commit/e66c8fdb7ff5409bd2f358c5f194038e49e9...
https://github.com/composer/composer/pull/12853
https://github.com/composer/composer/pull/12855
https://github.com/composer/composer/releases/tag/1.10.28
https://github.com/composer/composer/releases/tag/2.2.28
https://github.com/composer/composer/releases/tag/2.9.8
https://github.com/composer/composer/security/advisories/GHSA-f9f8-rm49-7jv2
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