CVE-2026-70426
Last modified
CVE-2026-70426 is a critical-severity vulnerability rated 9/10 on the CVSS scale. 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.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.
Description
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.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Jenkins Project | Jenkins | All versions |
| Jenkins Project | Remoting | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-70426?
How severe is CVE-2026-70426?
How do I fix CVE-2026-70426?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-7042A flaw has been found in 666ghj MiroFish up to 0.1.2. This a…7.3
- CVE-2026-70421Dell OpenManage Enterprise, versions prior to 4.7.0, contain…7.2
- CVE-2026-70422Dell OpenManage Enterprise, versions prior to 4.7.0, contain…8.8
- CVE-2026-70423Dell OpenManage Enterprise, versions prior to 4.7.0, contain…6.5
- CVE-2026-70424Dell OpenManage Enterprise, versions prior to 4.7.0, contain…6.5
- CVE-2026-70425Dell PowerScale OneFS, Versions 9.5.0.0 through 9.7.1.0, Ver…6.7
- CVE-2026-70427Jenkins 2.575 and earlier, LTS 2.568.1 and earlier does not …4.3
- CVE-2026-70428Jenkins 2.575 and earlier, LTS 2.568.1 and earlier improperl…4.3
- CVE-2026-70429Jenkins 2.575 and earlier, LTS 2.568.1 and earlier handles c…6.5
- CVE-2026-7043A vulnerability has been found in GreenCMS up to 2.3. This i…6.3
- CVE-2026-70430Jenkins 2.575 and earlier, LTS 2.568.1 and earlier does not …2.7
- CVE-2026-70431Jenkins Multijob Plugin 669.v9d96a_d9c71b_0 and earlier prov…8.8
Are you affected by CVE-2026-70426?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST