---
id: "CVE-2026-117623"
kind: "vulnerability"
aliases: ["CVE-2026-117623"]
title: "Jenkins: breadcrumb tooltip text lets readers run stored cross-site scripting"
severity: "medium"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["ci-cd", "jenkins", "package", "self-hosted"]
not_affected_if: ["patched-version"]
published_at: "2026-10-28T17:18:21+00:00"
first_seen_at: "2026-10-28T17:34:09+00:00"
updated_at: "2026-10-28T17:34:47+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-117623", "first_seen_at": "2026-10-28T17:34:09+00:00"}]
---

# Jenkins: breadcrumb tooltip text lets readers run stored cross-site scripting

Jenkins 2.587 and earlier, and LTS 2.580.1 and earlier, do not escape text shown in breadcrumb bar overflow menu tooltips. An attacker with Overall/Read permission can store script that runs in other users' browsers.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `jenkins-cli version` or open the Jenkins footer to read the running version
- Compare the running version against `2.587` (weekly) and `2.580.1` (LTS)

## Fix

- Upgrade Jenkins weekly to a release later than `2.587`
- Upgrade Jenkins LTS to a release later than `2.580.1`
- Check the Jenkins security advisory for the exact fixed version (unknown in the sources)

## Timeline

- 2026-10-28T17:34:09+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-117623

## From the sources

Jenkins 2.587 and earlier, LTS 2.580.1 and earlier does not escape the text shown in the tooltips of breadcrumb bar overflow menu entries, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Overall/Read permission.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_