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TI-2026-58186 Aliases CVE-2026-84646GHSA-8wrx-j32g-7fcf

Deserialization of untrusted data in Jenkins

Priority LOW 21CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
None · Low · None
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00517 44th percentileScored 2026-11-07
Fix Partial Jenkins (Jenkins Project): 2.580, 2.568.3Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
JenkinsJenkins—2.580, 2.568.3Patch availableCNA
  • Jenkins VendorJenkins Affected — Fixed in 2.580, 2.568.3 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*before 2.568.3VulnerableJenkins
cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*before 2.580VulnerableJenkins
  • cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:* Versions before 2.568.3 Vulnerable ·Jenkins
  • cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:* Versions before 2.580 Vulnerable ·Jenkins

Remediation

  • Fix · CNA Jenkins (Jenkins Project) Fixed in 2.580, 2.568.3

Fixed in the same release

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

  • Advisory ·

    Jenkins — Jenkins Security Advisory 2026-09-02

    13 records Highest priority Priority MEDIUM 4 MEDIUM, 9 LOW

    Other records, highest priority first

    • TI-2026-58188 Cross-site scripting in JenkinsPriority MEDIUM 41
    • TI-2026-58187 Deserialization of untrusted data in JenkinsPriority MEDIUM 41
    • TI-2026-58185 Mass assignment in JenkinsPriority MEDIUM 41
    Show all 13 records → Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
OpenShift Developer Tools and ServicesAffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-84646
  2. 2026-10-03 Alias added: GHSA-8wrx-j32g-7fcf

References

Advisory 1

  • 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