Session fixation vulnerability in Jenkins Bitbucket OAuth Plugin

published 2023-01-24 3 y ago modified 2026-06-17 4 mo ago also GHSA-x9q4-qwfh-9gjq , EUVD-2023-0586

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits: 0; none known

Jenkins Bitbucket OAuth Plugin 0.12 and earlier does not invalidate the previous session on login.

Patch / fix

fixed in 1 links 1

maven org.jenkins-ci.plugins:bitbucket-oauth 0.13

github.com/jenkinsci/bitbucket-oauth-plugin@b73ac28 commit

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 19 mo ago (2025-04-02)

Exploit prediction

1.09% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
maven	org.jenkins-ci.plugins:bitbucket-oauth	<0.13	0.13

Affected products

Jenkins Project Jenkins Bitbucket OAuth Plugin

Classification

Weakness

CWE-384 Session Fixation

References

github.com /jenkinsci/bitbucket-oauth-plugin/commit/b73ac285f8cfcc9727f089c6b2c7f13412285e7c
web
jenkins.io /security/advisory/2023-01-24/#SECURITY-2982
web, vendor-advisory
nvd.nist.gov /vuln/detail/CVE-2023-24427
advisory
github.com /jenkinsci/bitbucket-oauth-plugin
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary