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Vulnerability record · CVE-2026-84650 · published 2 September 2026

CVE-2026-84650: Jenkins deserialization of untrusted data vulnerability

Jenkins · Jenkins

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, transient fields cannot be excluded from deserialization, allowing attackers able to submit configuration updates to specify the values of transient fields that will be deserialized, the impact depending on how those fields are used.

8.8 CVSS 3.1 High EPSS 0.47% · top 62.0% CWE-502 · Deserialization of untrusted dataCWE-566 · CWE-566
8.8CVSS 3.1 base score
0.47%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
11 Sep 2026Last modified by NVD

Description

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, transient fields cannot be excluded from deserialization, allowing attackers able to submit configuration updates to specify the values of transient fields that will be deserialized, the impact depending on how those fields are used.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4032 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-84650), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.