CVE-2026-19429

Published: Ago 10, 2026 Last Modified: Ago 11, 2026
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,4
Source: 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
HIGH 8,8
Source: 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

Jenkins FilePath.untarFrom() does not validate symlink targets in extracted TAR archives, even in versions patched for CVE-2026-33001 and CVE-2026-70427. An authenticated attacker with job configuration privileges can include a malicious archive in a build step that creates workspace symlinks pointing to arbitrary files on the Jenkins controller. By reading the secrets directory, the attacker obtains the cryptographic keys used to sign remember-me cookies, forges a valid administrator session cookie without any admin interaction, and gains access to the Script Console for remote code execution. Jenkins 2.576 is additionally affected by a bypass of the CVE-2026-70427 blank-name check via Unicode zero-width characters (U+200B, U+200C, U+200D, U+2060, U+00AD), which Java's String.isBlank() does not recognize as whitespace.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0066
Percentile
0,5th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

59

Improper Link Resolution Before File Access ('Link Following')

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Access Control Other
Potential Impacts:
Read Files Or Directories Modify Files Or Directories Bypass Protection Mechanism Execute Unauthorized Code Or Commands
Applicable Platforms
Operating Systems: Windows, Unix
Likelihood of Exploit: Medium
View CWE Details
184

Incomplete List of Disallowed Inputs

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Bypass Protection Mechanism
Applicable Platforms
All platforms may be affected
View CWE Details
https://github.com/jenkinsci/jenkins
https://github.com/jenkinsci/jenkins
https://www.jenkins.io/security/advisory/2026-03-18/#SECURI…
https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3657
https://www.jenkins.io/security/advisory/2026-08-05/
https://www.jenkins.io/security/advisory/2026-08-05/