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Advisory record · GHSA-wrcg-234w-hfhq

Subrion CMS vulnerable to Cross-site Scripting

CVSS 4.8 MediumEPSS 0.0021 · 11th percentile

Published by the GitHub Advisory Database at 15 Jun 2026, 03:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
intelliants/subrionPackagist<=4.0.3No fixed version yet
Identifiers
GHSA-wrcg-234w-hfhq · CVE-2026-12202 · PKSA-9dbm-kft4-ck43
Weakness (CWE)
CWE-79 · CWE-94
Tags
Published
15 Jun 2026
Updated
26 Aug 2026

Machine-written summary

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

Subrion CMS (intelliants/subrion) versions up to and including 4.0.3 are vulnerable to cross-site scripting through the CSS class name argument of an unspecified function in the Blocks endpoint. A remote attacker can exploit this, and a public exploit exists. The source lists no fixed version and the vendor did not respond to disclosure, so no fix is listed.

Written 3 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
4.8 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P CNA (VulDB)
  • CISA KEV Not listed.
  • EPSS 0.0021, the 11th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:24 UTC First seen by agentprime
  2. 31 Oct 2026, 14:24 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.