CVE-2026-42522

A missing permission check in Jenkins GitHub Branch Source Plugin 1967.vdea_d580c1a_b_a_ and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL with attacker-specified GitHub App credentials.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.jenkins.io/security/advisory/2026-04-29/#SECURITY-3702	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:jenkins:github_branch_source:*:*:*:*:*:jenkins:*:*

History

26 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Una verificación de permisos faltante en el plugin Jenkins GitHub Branch Source 1967.vdea_d580c1a_b_a_ y anteriores permite a los atacantes con permiso General/Lectura conectarse a una URL especificada por el atacante con credenciales de aplicación de GitHub especificadas por el atacante.

Information

Published : 2026-04-29 14:16

Updated : 2026-10-26 20:10

NVD link : CVE-2026-42522

Mitre link : CVE-2026-42522

CVE.ORG link : CVE-2026-42522

JSON object : View

Products Affected

jenkins

github_branch_source

CWE

CWE-862

Missing Authorization

{"id": "CVE-2026-42522", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42522", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-29T14:28:29.627702Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "affected": [{"source": "jenkinsci-cert@googlegroups.com", "affectedData": [{"vendor": "Jenkins Project", "product": "Jenkins GitHub Branch Source Plugin", "versions": [{"status": "affected", "version": "0", "versionType": "maven", "lessThanOrEqual": "1967.vdea_d580c1a_b_a_"}], "defaultStatus": "unaffected"}]}], "published": "2026-04-29T14:16:19.260", "references": [{"url": "https://www.jenkins.io/security/advisory/2026-04-29/#SECURITY-3702", "tags": ["Vendor Advisory"], "source": "jenkinsci-cert@googlegroups.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-862"}]}], "descriptions": [{"lang": "en", "value": "A missing permission check in Jenkins GitHub Branch Source Plugin 1967.vdea_d580c1a_b_a_ and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL with attacker-specified GitHub App credentials."}, {"lang": "es", "value": "Una verificaci\u00f3n de permisos faltante en el plugin Jenkins GitHub Branch Source 1967.vdea_d580c1a_b_a_ y anteriores permite a los atacantes con permiso General/Lectura conectarse a una URL especificada por el atacante con credenciales de aplicaci\u00f3n de GitHub especificadas por el atacante."}], "lastModified": "2026-10-26T20:10:00.160", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:jenkins:github_branch_source:*:*:*:*:*:jenkins:*:*", "vulnerable": true, "matchCriteriaId": "7D9B9F7F-9588-49D6-B38A-91691EFAF07E", "versionEndIncluding": "1967.vdea_d580c1a_b_a"}], "operator": "OR"}]}], "sourceIdentifier": "jenkinsci-cert@googlegroups.com"}