How severe is CVE-2026-92129?

CVE-2026-92129 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-92129 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-92129?

CVE-2026-92129 affects Jenkins Script Security. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-92129?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-92129 published?

CVE-2026-92129 was published on 2026-09-16 and last updated on 2026-09-21.

CVE-2026-92129

CVE-2026-92129 is a high-severity vulnerability in Jenkins Script Security with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-693.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-693
Affected product: Jenkins Script Security
Published: 2026-09-16
Last modified: 2026-09-21

Description

Jenkins Script Security Plugin 1415.v9a_f9b_3a_c253d and earlier does not check calls from sandboxed scripts to methods added dynamically to a class at runtime, allowing attackers with permission to define and run sandboxed scripts, including Pipelines, to bypass the sandbox protection and execute code outside the sandbox.

Frequently asked questions

What is CVE-2026-92129?: Jenkins Script Security Plugin 1415.v9a_f9b_3a_c253d and earlier does not check calls from sandboxed scripts to methods added dynamically to a class at runtime, allowing attackers with permission to define and run sandboxed scripts, including Pipelines, to bypass the sandbox protection and execute code outside the sandbox.
How severe is CVE-2026-92129?: CVE-2026-92129 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-92129 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-92129?: CVE-2026-92129 affects Jenkins Script Security. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-92129?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-92129 published?: CVE-2026-92129 was published on 2026-09-16 and last updated on 2026-09-21.

References

https://www.jenkins.io/security/advisory/2026-09-16/#SECURITY-3977

Affected products (1)

cpe:2.3:a:jenkins:script_security:*:*:*:*:*:jenkins:*:*

More vulnerabilities in Jenkins Script Security

CVE-2022-43404 — Critical (CVSS 9.9): A sandbox bypass vulnerability involving crafted constructor bodies and calls to sandbox-generated synthetic…
CVE-2022-43403 — Critical (CVSS 9.9): A sandbox bypass vulnerability involving casting an array-like value to an array type in Jenkins Script Security Plugin…
CVE-2022-43401 — Critical (CVSS 9.9): A sandbox bypass vulnerability involving various casts performed implicitly by the Groovy language runtime in Jenkins…
CVE-2020-2279 — Critical (CVSS 9.9): A sandbox bypass vulnerability in Jenkins Script Security Plugin 1.74 and earlier allows attackers with permission to…
CVE-2019-10431 — Critical (CVSS 9.9): A sandbox bypass vulnerability in Jenkins Script Security Plugin 1.64 and earlier related to the handling of default…
CVE-2019-1003029 — Critical (CVSS 9.9): A sandbox bypass vulnerability exists in Jenkins Script Security Plugin 1.53 and earlier in…

All CVEs affecting Jenkins Script Security →

Other CWE-693 (Protection Mechanism Failure) vulnerabilities

CVE-2026-93606 — Critical (CVSS 10.0): vm2 (npm) versions 3.12.0 and earlier contain a sandbox escape in `VM` and `NodeVM`. When an embedder exposes a host…
CVE-2026-93605 — Critical (CVSS 10.0): vm2 NodeVM versions before 3.12.1 contain a sandbox escape vulnerability where the DANGEROUS_BUILTINS denylist omits…
CVE-2026-92956 — Critical (CVSS 10.0): vm2 versions 3.10.1 through 3.11.6 contain a sandbox escape reachable from a default `new VM()` sandbox when running on…
CVE-2026-75874 — Critical (CVSS 10.0): Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Thunderbird 154,…
CVE-2026-47140 — Critical (CVSS 10.0): vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM blocks several dangerous Node.js builtins…
CVE-2026-34208 — Critical (CVSS 10.0): SandboxJS is a JavaScript sandboxing library. Prior to 0.8.36, SandboxJS blocks direct assignment to global objects…

Browse all CWE-693 (Protection Mechanism Failure) vulnerabilities →