> CVE-2026-34042 [HIGH]

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PUBLISHED
2026-03-31 03:15
MODIFIED
2026-03-31 03:15
CVSS_SCORE V3
8.2
EPSS (Prob. Exploit)
0.47%
Top 59.3%
DATA SOURCES:
NVD đź”— 2026-03-31 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-11-08 GITHUB đź”— 2026-11-05 OSV đź”— 2026-11-01

> DESCRIPTION

act is a project which allows for local running of github actions. Prior to version 0.2.86, act's built in actions/cache server listens to connections on all interfaces and allows anyone who can connect to it including someone anywhere on the internet to create caches with arbitrary keys and retrieve all existing caches. If they can predict which cache keys will be used by local actions, they can create malicious caches containing whatever files they please most likely allowing arbitrary remote code execution within the docker container. This issue has been patched in version 0.2.86.

> 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:R/S:C/C:H/I:L/A:N
EXPLOITABILITY
2.8
IMPACT
4.7

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/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
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
Required (R)
Nécessite une action utilisateur (clic lien, ouverture fichier, etc.)
S (Périmètre)
Scope
Changed (C)
Impact s'étend au-delà du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale 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
High
Divulgation totale d'informations
Intégrité
Low
Modification limitée des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-862

> CWE DETAILED DESCRIPTIONS

CWE-862: Missing Authorization - The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

> GITHUB SECURITY ADVISORY

GHSA-x34h-54cw-9825 HIGH

act: actions/cache server allows malicious cache injection

AFFECTED PACKAGES:
GO / github.com/nektos/act
<= 0.2.85
Fixed in: 0.2.86

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

act: actions/cache server allows malicious cache injection

AFFECTED PACKAGES:
Unknown / Unknown
95 versions affected
ALIASES:
GHSA-x34h-54cw-9825, GO-2026-4890

> HISTORIQUE DES MODIFICATIONS

Première apparition
31/03/2026 03:15
Source: NVD
📊 ENRICHISSEMENT 01/04/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-862: Missing Authorization - The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
Total des modifications: 1 Dernière mise à jour: 7 months ago

> REFERENCES

https://code.forgejo.org/forgejo/runner/issues/294
https://github.com/nektos/act/commit/c28c27e141e8b54f9853de82f421ee09846751f7
https://github.com/nektos/act/releases/tag/v0.2.86
https://github.com/nektos/act/security/advisories/GHSA-x34h-54cw-9825
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