GHSA-wrcg-234w-hfhqlow2.4
Subrion CMS vulnerable to Cross-site Scripting
The advisory, in context
A vulnerability has been found in Intelliants Subrion CMS up to 4.0.3. Affected by this issue is some unknown functionality of the component Blocks Endpoint. Such manipulation of the argument CSS class name leads to cross site scripting. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
intelliants/subrion Packagist
Ecosystem versions
Earlier releases through 4.0.3 (inclusive)
No fix recorded for this interval.
4 explicitly affected versions
v4.0.0, v4.0.1, v4.0.2, v4.0.3
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "4.0.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"v4.0.0",
"v4.0.1",
"v4.0.2",
"v4.0.3"
]
}References
- https://nvd.nist.gov/vuln/detail/CVE-2026-12202
- https://github.com/intelliants/subrion
- https://hackmd.io/@noka/B1sue5Xkzl
- https://karinagante.github.io/cve-2026-12202
- https://karinagante.github.io/cve-2026-12202/#proof-of-concept-poc
- https://vuldb.com/cve/CVE-2026-12202
- https://vuldb.com/submit/830013
- https://vuldb.com/vuln/370845
- https://vuldb.com/vuln/370845/cti