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Advisory record · GHSA-w658-mh9p-ww8f

Backstage catalog rules can be bypassed for URL locations using encoded path segments

CVSS 6.5 MediumEPSS 0.0032 · 24th percentile

Published by the GitHub Advisory Database at 28 Oct 2026, 22:42 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
@backstage/plugin-catalog-backendnpm<3.9.2 || >=4.0.0, <4.0.23.9.2, 4.0.2
Identifiers
GHSA-w658-mh9p-ww8f · CVE-2026-115923
Weakness (CWE)
CWE-22
Tags
Published
28 Oct 2026
Updated
28 Oct 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
6.5 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0032, the 24th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 26 Oct 2026, 17:56 UTC Confirmed by the CVE List
  2. 26 Oct 2026, 18:17 UTC Confirmed by NVD
  3. 31 Oct 2026, 13:32 UTC First seen by agentprime
  4. 31 Oct 2026, 13:32 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.