CVE-2026-100238Flow colon-separator and flow-guidedtour-optin-welcome-description messages allow stored XSS
Updated under an hour ago ()
Does this affect you?
It affects Wikimedia Foundation Mediawiki - Flow Extension. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Flow Extension allows Stored XSS. This issue affects Mediawiki - Flow Extension: from * before 1.46.1, 1.45.5, 1.43.10.
- CVSS
- 6.1 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- wikimedia-foundation
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Wikimedia Foundation Mediawiki - Flow Extension wikimedia_foundation:mediawiki_flow_extension (from the name) | before 1.46.1, 1.45.5, 1.43.10 | CNA record |
References
- https://phabricator.wikimedia.org/T432425
- https://gerrit.wikimedia.org/r/q/Ic6149363fe1de2440240fe88aebfd4ae30cea606
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.