TI-2026-25450 Aliases CVE-2026-33002 GHSA-phhv-63fh-rrc8

Origin validation error in Jenkins

LOW 35CWE-350Published 2026-03-18 · Updated 2026-03-19

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: High
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-346.

Summary

Jenkins 2.442 through 2.554 (both inclusive), LTS 2.426.3 through LTS 2.541.2 (both inclusive) performs origin validation of requests made through the CLI WebSocket endpoint by computing the expected origin for comparison using the Host or X-Forwarded-Host HTTP request headers, making it vulnerable to DNS rebinding attacks that allow bypassing origin validation.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00284 21st percentileScored 2026-11-07

Fix Partial Jenkins (Jenkins Project): 2.427, 2.555, 2.541.3org.jenkins-ci.main:jenkins-core (Maven): 2.555Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Jenkins	Jenkins	—	2.427, 2.555, 2.541.3	Patch available	CNA
—	org.jenkins-ci.main:jenkins-core (Maven)	2.442 to before 2.555	2.555	Patch available	GHSA-phhv-63fh-rrc8

Jenkins VendorJenkins Affected — Fixed in 2.427, 2.555, 2.541.3 Patch available CNA
org.jenkins-ci.main:jenkins-core (Maven) Vendor— Affected 2.442 to before 2.555 Fixed in 2.555 Patch available GHSA-phhv-63fh-rrc8

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:jenkins:jenkins:::::lts:::*	2.426.3 to before 2.541.3	Vulnerable	Jenkins
cpe:2.3:a:jenkins:jenkins:::::-:::*	2.442 to before 2.555	Vulnerable	Jenkins

cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:* Versions 2.426.3 to before 2.541.3 Vulnerable ·Jenkins
cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:* Versions 2.442 to before 2.555 Vulnerable ·Jenkins

Remediation

Fix · CNA Jenkins (Jenkins Project) Fixed in 2.427, 2.555, 2.541.3
Fix · GHSA-phhv-63fh-rrc8 org.jenkins-ci.main:jenkins-core (Maven) Fixed in 2.555 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Advisory · 2026-03-18
Jenkins — Jenkins Security Advisory 2026-03-18
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-25449 Link following in JenkinsPriority MEDIUM 44
Show all 2 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
OpenShift Developer Tools and Services	Affected	No fix planned: Out of support scope

Not affected: 1 product

Red Hat Developer Hub 1

Timeline

2026-10-02 Threatist record created from CVE-2026-33002
2026-10-03 Alias added: GHSA-phhv-63fh-rrc8
2026-10-27 Affected versions changed · Red Hat

References

Advisory 2

Other 2

TI-2024-15885 Path traversal in Jenkins KEVCVSS 3.1CRITICAL 9.8
TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
TI-2017-14573 Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an… KEVCVSS 3.1CRITICAL 9.8
TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
TI-2015-04472 The Fingerprints pages in Jenkins before 1.638 and LTS before 1.625.2 might allow remote… KEVCVSS 3.1HIGH 7.5
TI-2016-07596 The remoting module in Jenkins before 2.32 and LTS before 2.19.3 allows remote attackers… CVSS 3.0CRITICAL 9.8

See all 293 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences