CVEs / CVE-2026-53435
CVE-2026-53435: jenkins jenkins vulnerability
- high 8.8 CVSS 3.1 (from the CNA)
- EPSS 53.1% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
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Description
In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled `config.xml` submission in a way that allows them to handle HTTP requests afterwards. This can be used to impersonate any user and send HTTP requests on their behalf, up to and including use of the Script Console to run arbitrary code, or to read arbitrary files from the Jenkins controller.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| jenkins jenkins | before 2.555.3 | 2.555.3 |
| jenkins jenkins | before 2.568 | 2.568 |
| Product | Affected | Fixed in |
|---|---|---|
| org.jenkins-ci.main:jenkins-core (Maven) | before 2.555.3 | 2.555.3 |
| org.jenkins-ci.main:jenkins-core (Maven) | from 2.556, before 2.568 | 2.568 |
Package versions from GHSA-g2xq-2v27-4rh3.
Exploitation
Not in the CISA Known Exploited Vulnerabilities catalog as of 30 Oct 2026.
Severity
| CVSS 3.1 | 8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by the CNA (134c704f-9b21-4f2e-91b3-4a467353bcc0) |
|---|---|
| Weakness | CWE-502 |
References
- CVE-2026-53435 on NVD
- CVE-2026-53435 on OSV
- https://www.jenkins.io/security/advisory/2026-06-10/#SECURITY-3707 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:60239
- https://access.redhat.com/errata/RHSA-2026:60246
- https://access.redhat.com/errata/RHSA-2026:60247
- https://access.redhat.com/errata/RHSA-2026:60248
- https://access.redhat.com/errata/RHSA-2026:60249
- https://access.redhat.com/errata/RHSA-2026:60250
- https://access.redhat.com/errata/RHSA-2026:60251
- https://access.redhat.com/errata/RHSA-2026:60252
- https://access.redhat.com/errata/RHSA-2026:60254
- https://access.redhat.com/errata/RHSA-2026:60256
- https://access.redhat.com/errata/RHSA-2026:60259
- https://access.redhat.com/security/cve/CVE-2026-53435
- https://bugzilla.redhat.com/show_bug.cgi?id=2487539
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53435.json
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.