CVE-2026-53441
Description
A flaw was found in Jenkins. This vulnerability, a stored cross-site scripting (XSS) issue, allows attackers with Agent/Configure permission to inject malicious scripts into the user-provided description of a generic offline cause. When other users view this description, the injected script can execute in their browser, potentially leading to information disclosure or unauthorized actions.
Mitigation
To fully mitigate this vulnerability, upgrade the Jenkins instance to version 2.568 or LTS 2.555.3 (or later). These releases officially resolve the issue by securely rendering the offline cause descriptions as plain text. If an immediate upgrade is not feasible, the risk can be significantly reduced by auditing Role-Based Access Control (RBAC) settings and strictly limiting the Agent/Configure permission to highly trusted, essential administrators only.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.4 | 5.4 | 5.4 |
| Attack Vector | Network | Network | Network |
| Attack Complexity | Low | Low | Low |
| Privileges Required | Low | Low | Low |
| User Interaction | Required | Required | None |
| Scope | Changed | Changed | Unchanged |
| Confidentiality | Low | Low | Low |
| Integrity Impact | Low | Low | Low |
| Availability Impact | None | None | None |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
cve.org: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
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