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TI-2026-49201 Aliases CVE-2026-70426GHSA-v269-8r2r-vj93

Deserialization of untrusted data in Jenkins

Priority MEDIUM 41CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 11 fixed, 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 Remoting 3384.v60d89463d9e0 and earlier, except 3355.3357.v931d3c992987, included in Jenkins 2.575 and earlier, LTS 2.568.1 and earlier, the JEP-200 class filter is not applied to classes resolved via a fallback path in the Remoting deserialization implementation, allowing agent processes, code running on agents, and attackers with Agent/Connect permission to bypass the JEP-200 deserialization filter for classes on the Jenkins core classpath.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00515 44th percentileScored 2026-11-07
Fix Partial Jenkins (Jenkins Project): 2.576, 2.568.2Remoting (Jenkins Project): 3385.vf1123fb_515da_, 3355.3357.v931d3c992987Red Hat: 11 advisoriesRed Hat: 11 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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—2.576, 2.568.2Patch availableCNA
JenkinsRemoting—3385.vf1123fb_515da_, 3355.3357.v931d3c992987Patch availableCNA
  • Jenkins VendorJenkins Affected — Fixed in 2.576, 2.568.2 Patch available CNA
  • Remoting VendorJenkins Affected — Fixed in 3385.vf1123fb_515da_, 3355.3357.v931d3c992987 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:jenkins:jenkins:*:*:*:*:*:*:*:*——Jenkins
  • cpe:2.3:a:jenkins:jenkins:*:*:*:*:*:*:*:* Versions — — ·Jenkins

Remediation

  • Fix · CNA Jenkins (Jenkins Project) Fixed in 2.576, 2.568.2
  • Fix · CNA Remoting (Jenkins Project) Fixed in 3385.vf1123fb_515da_, 3355.3357.v931d3c992987

Red Hat 11 advisories

  • RHSA-2026:60259 Released 2026-08-26 · Red Hat rating Important
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.20 security update.
    • OpenShift Developer Tools and Services 4.20 registry.redhat.io/ocp-tools-4/jenkins-rhel9
  • RHSA-2026:60256 Released 2026-08-26 · Red Hat rating Important
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.22 security update.
    • OpenShift Developer Tools and Services 4.22 registry.redhat.io/ocp-tools-4/jenkins-rhel9
  • RHSA-2026:60254 Released 2026-08-26 · Red Hat rating Important
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.21 security update.
    • OpenShift Developer Tools and Services 4.21 registry.redhat.io/ocp-tools-4/jenkins-rhel9
Show 8 more Red Hat advisories
  • RHSA-2026:60252 Released 2026-08-26 · Red Hat rating Important
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.19 security update.
    • OpenShift Developer Tools and Services 4.19 registry.redhat.io/ocp-tools-4/jenkins-rhel9
  • RHSA-2026:60251 Released 2026-08-26 · Red Hat rating Important
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.16 security update.
    • OpenShift Developer Tools and Services 4.16 registry.redhat.io/ocp-tools-4/jenkins-rhel9
  • RHSA-2026:60250 Released 2026-08-26 · Red Hat rating Important
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.18 security update.
    • OpenShift Developer Tools and Services 4.18 registry.redhat.io/ocp-tools-4/jenkins-rhel9
  • RHSA-2026:60249 Released 2026-08-26 · Red Hat rating Important
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.13 security update.
    • OpenShift Developer Tools and Services 4.13 registry.redhat.io/ocp-tools-4/jenkins-rhel8
  • RHSA-2026:60248 Released 2026-08-26 · Red Hat rating Important
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.14 security update.
    • OpenShift Developer Tools and Services 4.14 registry.redhat.io/ocp-tools-4/jenkins-rhel8
  • RHSA-2026:60247 Released 2026-08-26 · Red Hat rating Important
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.12 security update.
    • OpenShift Developer Tools and Services 4.12 registry.redhat.io/ocp-tools-4/jenkins-rhel8
  • RHSA-2026:60246 Released 2026-08-26 · Red Hat rating Important
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.17 security update.
    • OpenShift Developer Tools and Services 4.17 registry.redhat.io/ocp-tools-4/jenkins-rhel9
  • RHSA-2026:60239 Released 2026-08-26 · Red Hat rating Important
    Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.15 security update.
    • OpenShift Developer Tools and Services 4.15 registry.redhat.io/ocp-tools-4/jenkins-rhel8

Fixed in the same release

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

  • Advisory ·

    Jenkins — Jenkins Security Advisory 2026-08-05

    5 records Highest priority Priority MEDIUM 1 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2026-49204 Jenkins 2.575 and earlier, LTS 2.568.1 and earlier handles case-insensitivity in user…Priority LOW 38
    • TI-2026-49203 Path traversal in JenkinsPriority LOW 21
    • TI-2026-49202 Link following in JenkinsPriority LOW 21
    Show all 5 records → Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
OpenShift Developer Tools and ServicesAffectedNo fix yet
OpenShift Developer Tools and Services 4.12Fixed RHSA-2026:60247
OpenShift Developer Tools and Services 4.13Fixed RHSA-2026:60249
OpenShift Developer Tools and Services 4.14Fixed RHSA-2026:60248
OpenShift Developer Tools and Services 4.15Fixed RHSA-2026:60239
OpenShift Developer Tools and Services 4.16Fixed RHSA-2026:60251
OpenShift Developer Tools and Services 4.17Fixed RHSA-2026:60246
OpenShift Developer Tools and Services 4.18Fixed RHSA-2026:60250
OpenShift Developer Tools and Services 4.19Fixed RHSA-2026:60252
OpenShift Developer Tools and Services 4.20Fixed RHSA-2026:60259
OpenShift Developer Tools and Services 4.21Fixed RHSA-2026:60254
OpenShift Developer Tools and Services 4.22Fixed RHSA-2026:60256
Not affected: 11 products
  • OpenShift Developer Tools and Services 4.12
  • OpenShift Developer Tools and Services 4.13
  • OpenShift Developer Tools and Services 4.14
  • OpenShift Developer Tools and Services 4.15
  • OpenShift Developer Tools and Services 4.16
  • OpenShift Developer Tools and Services 4.17
  • OpenShift Developer Tools and Services 4.18
  • OpenShift Developer Tools and Services 4.19
  • OpenShift Developer Tools and Services 4.20
  • OpenShift Developer Tools and Services 4.21
  • OpenShift Developer Tools and Services 4.22

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-70426
  2. 2026-10-03 Alias added: GHSA-v269-8r2r-vj93

References

Advisory 1

  • TI-2024-15885 Path traversal in Jenkins KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • 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
See all 1914 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences