Unscored severity · published Oct 28, 2026
CVE-2026-117624
Jenkins 2.587 and earlier, LTS 2.580.1 and earlier does not consistently enforce the restriction on deserializing objects of types marked as storing their configuration in…
New
–
CVSS
–
EPSS
No
On KEV
Description
Jenkins 2.587 and earlier, LTS 2.580.1 and earlier does not consistently enforce the restriction on deserializing objects of types marked as storing their configuration in independent top-level configuration files as nested values, allowing attackers to bypass the root element check and potentially inject nested objects.
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JE
Jenkins · Jenkins
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-117624
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-117624
www.jenkins.io
https://www.jenkins.io/security/advisory/2026-10-28/#SECURITY-4243
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