CVE-2026-84646

At a glance

Severity: MEDIUM 4.3
EPSS: EPSS 0.34 % · percentile 27 (2026-10-27)
State: PUBLISHED
Published: 2026-09-02
Updated: 2026-09-02
Assigner: jenkins
NVD status: Analyzed

Description

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, user objects can appear as nested field values in other deserialized XML objects, allowing attackers with Overall/Read permission to create user objects by submitting crafted XML.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N	CISA-ADP
CVSS 3.1	MEDIUM 4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Weaknesses (CWE)

CWE-502

European references

ENISA EUVD · EUVD-2026-70112
GCVE · GCVE-0-2026-84646

Affected configurations (NVD CPE)

cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:* < 2.568.3
cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:* < 2.580

Affected products

Product	Versions
Jenkins Project · Jenkins	unaffected 2.580 < * ; unaffected 2.568.3 < 2.568.*

References

https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-3908

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD