CVE-2026-34088 RecentChanges entries expose suppressed content via generated log page html
Attackers can view suppressed content via RecentChanges log pages, exposing sensitive information to unauthorized users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-34088?
CVE-2026-34088 is a low-severity vulnerability in Mediawiki Mediawiki, published on 11 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki.
This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
Weakness: CWE-200
Which versions are affected by CVE-2026-34088?
It affects 1 product.
Products include Mediawiki Mediawiki.
How do I fix CVE-2026-34088?
Upgrade to a fixed version.
Is CVE-2026-34088 being exploited?
There is no known exploitation of CVE-2026-34088 in the wild and no public exploit code.
Other vulnerabilities in Mediawiki Mediawiki
Sources
Also known as DEBIAN-CVE-2026-34088, GHSA-wpmg-m9mx-w7pj, UBUNTU-CVE-2026-34088.