Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Semantic MediaWiki versions before 7.2.0 (Packagist mediawiki/semantic-media-wiki) have a reflected cross-site scripting flaw in the query debug output produced by DebugFormatter, which is emitted as raw HTML on Special:Ask when the debug parameter is used. An anonymous user can exploit it by sending a crafted request whose query targets a text-typed property, such as the built-in Text property, so that the payload is echoed back in the response. The fix is to upgrade to version 7.2.0 or later.
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
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.1 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0028, the 21st percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 13:55 UTC First seen by agentprime
- 31 Oct 2026, 13:55 UTC Confirmed by OSV