Bug 2036698 (CVE-2021-44858) - CVE-2021-44858 mediawiki: information disclosure
Summary: CVE-2021-44858 mediawiki: information disclosure
Alias: CVE-2021-44858
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 2036699
Blocks: Embargoed2036706
TreeView+ depends on / blocked
Reported: 2022-01-03 15:51 UTC by Marian Rehak
Modified: 2022-01-07 17:52 UTC (History)
11 users (show)

Fixed In Version: mediawiki 1.35.5, mediawiki 1.36.3, mediawiki 1.37.1
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in mediawiki. The "undo" feature (action=edit&undo=##&undoafter=###) allowed an attacker to view the contents of arbitrary revisions, regardless of whether they had permissions to do so. This was also found in the "mcrundo" and "mcrrestore" actions (action=mcrundo and action=mcrrestore).
Clone Of:
Last Closed: 2022-01-07 16:11:04 UTC

Attachments (Terms of Use)

Description Marian Rehak 2022-01-03 15:51:02 UTC
It is possible to use action=edit&undo= followed by action=mcrundo and action=mcrrestore to view private pages on a private wiki that has at least one page set in $wgWhitelistRead.

Upstream Reference:


Comment 1 Marian Rehak 2022-01-03 15:51:16 UTC
Created mediawiki tracking bugs for this issue:

Affects: fedora-all [bug 2036699]

Comment 2 Product Security DevOps Team 2022-01-07 16:11:02 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


Note You need to log in before you can comment on or make changes to this bug.