> CVE-2026-73294 [CRITICAL]

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PUBLISHED
2026-08-12 16:17
MODIFIED
2026-08-12 16:17
CVSS_SCORE V3
9.9
EPSS (Prob. Exploit)
0.65%
Top 48.9%
DATA SOURCES:
NVD 🔗 2026-08-12 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-01 GITHUB 🔗 2026-10-29 OSV 🔗 2026-10-26

> DESCRIPTION

Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.17 and 2.19.5-beta2, repository git_url handling passes an attacker-controlled --upload-pack option to CmdGitClient.GetLastRemoteCommitHash through POST /api/project/{id}/repositories and scheduled commit-hash polling, allowing a project Manager or Owner to execute arbitrary OS commands in the Semaphore server process. This issue is fixed in versions 2.18.17 and 2.19.5-beta2.

> 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:L/UI:N/S:C/C:H/I:H/A:H
EXPLOITABILITY
3.1
IMPACT
6.0

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
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
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-78 CWE-88

> CWE DETAILED DESCRIPTIONS

CWE-78: Improper Neutralization of Special Elements used in an OS Command - The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command before it is sent to a downstream component. | CWE-88: Improper Neutralization of Argument Delimiters in a Command - The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string.

> GITHUB SECURITY ADVISORY

GHSA-xp7j-h7jc-4w8p CRITICAL

Semaphore U: OS Command Injection

AFFECTED PACKAGES:
GO / github.com/semaphoreui/semaphore
< 0.0.0-20260704181911-7e8a9434bd81
Fixed in: 0.0.0-20260704181911-7e8a9434bd81

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Semaphore U: OS Command Injection

AFFECTED PACKAGES:
Unknown / Unknown
375 versions affected
ALIASES:
CVE-2026-73682, GHSA-xp7j-h7jc-4w8p, GO-2026-6435

> HISTORIQUE DES MODIFICATIONS

Première apparition
12/08/2026 16:17
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') - The product constructs all or part of an OS command using externally-influenced input from an upstr...
Nouvelle valeur:
CWE-78: Improper Neutralization of Special Elements used in an OS Command - The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it doe...
📊 ENRICHISSEMENT 01/09/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') - The product constructs all or part of an OS command using externally-influenced input from an upstr...
Total des modifications: 2 Dernière mise à jour: 8 hours ago

> REFERENCES

https://github.com/semaphoreui/semaphore/commit/7e8a9434bd81b82cf42220151c74801e...
https://github.com/semaphoreui/semaphore/commit/a7a7a33a64aea382a0726b3722856f29...
https://github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8p
https://github.com/semaphoreui/semaphore/tree/v2.18.17
https://github.com/semaphoreui/semaphore/tree/v2.19.5-beta2
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