CVE-2026-84667 | BDVDB-2026-367477 Detail

Jenkins ProjectJenkins ThinBackup Plugin

Description#

Jenkins ThinBackup Plugin 2.1.4 and earlier allows overwriting the plugin's backup configuration through Stapler data binding, allowing attackers to redirect backup writes to an attacker-specified directory and to include arbitrary files from the Jenkins controller file system in backups.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact low, availability impact none. Attack vector: network.

Weaknesses#

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

References#

https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4099

Exploit#

No public exploit known

History#

Version 12026-09-02Record published in the CVE List.

Published

Published: 2026-09-02
Last modified: 2026-09-02

Vendor information

Vendor: Jenkins Project
Product: Jenkins ThinBackup Plugin

All Jenkins Project vulnerabilities

Score

7.1 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 31.9.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Path Traversal

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
<= 2.1.4
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.1 High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	Low
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).