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Advisory record · GHSA-2q27-6p2h-q6r3

Jenkins Assembla Plugin has an XXE vulnerability

CVSS 7.1 HighEPSS 0.0036 · 29th percentile

Published by the GitHub Advisory Database at 24 Jun 2026, 15:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.jenkins-ci.plugins:assemblaMaven<=1.4No fixed version yet
Identifiers
GHSA-2q27-6p2h-q6r3 · CVE-2026-57303
Weakness (CWE)
CWE-918
Tags
Published
24 Jun 2026
Updated
25 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Jenkins Assembla Plugin version 1.4 and earlier does not configure its XML parser to block XML external entity (XXE) attacks when it parses responses from the configured Assembla server. An attacker who can control those server responses can extract secrets from the Jenkins controller or perform server-side request forgery. No fix is listed.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.1 High 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.0036, the 29th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:16 UTC First seen by agentprime
  2. 31 Oct 2026, 14:16 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.