CVE-2026-84651
Last modified
CVE-2026-84651 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the REST API and CLI endpoints for updating agent configuration do not prevent a submitted configuration from overwriting a different agent by specifying that agent's name in the submitted XML document, allowing attackers with Agent/Configure permission on one agent to take over a different agent, gaining control of its configuration and obtaining access to its inbound agent secret and environment variables.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
Description
In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the REST API and CLI endpoints for updating agent configuration do not prevent a submitted configuration from overwriting a different agent by specifying that agent's name in the submitted XML document, allowing attackers with Agent/Configure permission on one agent to take over a different agent, gaining control of its configuration and obtaining access to its inbound agent secret and environment variables.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Jenkins | Jenkins | < 2.568.3 |
| Jenkins | Jenkins | < 2.580 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-84651?
How severe is CVE-2026-84651?
How do I fix CVE-2026-84651?
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-84645In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, objec…8.8
- CVE-2026-84646In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, user …4.3
- CVE-2026-84647In Stapler 2107.v8dfcb_e8ed317 and earlier, except 2088.2093…8.8
- CVE-2026-84648In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the s…8.8
- CVE-2026-84649In Stapler 1839.ved17667b_a_eb_5 through 2107.v8dfcb_e8ed317…8.8
- CVE-2026-84650In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, trans…8.8
- CVE-2026-84652In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenki…7.3
- CVE-2026-84653Jenkins 2.421 through 2.579 (both inclusive), LTS 2.426.1 th…3.5
- CVE-2026-84654In Stapler 2107.v8dfcb_e8ed317 and earlier, except 2088.2093…5.4
- CVE-2026-84655Jenkins 2.579 and earlier, LTS 2.568.2 and earlier does not …4.3
- CVE-2026-84656A missing permission check in Jenkins 2.579 and earlier, LTS…4.3
- CVE-2026-84657In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the b…4.2
Are you affected by CVE-2026-84651?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST