CVE-2026-92128: script security — Fix

Description

Jenkins Script Security Plugin 1415.v9a_f9b_3a_c253d and earlier downloads a JAR file specified by URL twice, confirming the approval of the first download and loading the classpath entries from the second, allowing attackers able to define classpath entries to execute arbitrary code in the context of the Jenkins controller JVM.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0029

Probability of exploitation

0.20%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-494 CWE-494

Affected Products

Vendor	Product	Versions
jenkins	script_security	< 1415.v9a_f9b_3a_c253d

References

Advisories & Patches

https://www.jenkins.io/security/advisory/2026-09-16/#SECURITY-3932

Frequently Asked Questions

What is CVE-2026-92128? +

Jenkins Script Security Plugin 1415.v9a_f9b_3a_c253d and earlier downloads a JAR file specified by URL twice, confirming the approval of the first download and loading the classpath entries from the second, allowing attackers able to define classpath entries to execute arbitrary code in the context of the Jenkins controller JVM. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-92128? +

CVE-2026-92128 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0029, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-92128? +

CVE-2026-92128 affects products from jenkins, specifically: script_security. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-92128? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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