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Fencer Intel
medium 6.1

CVE-2022-28202 json

An XSS issue was discovered in MediaWiki before 1.35.6, 1.36.x before 1.36.4, and 1.37.x before 1.37.2.

published 4y ago modified 4mo ago also BIT-mediawiki-2022-28202 , EUVD-2022-32656

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

An XSS issue was discovered in MediaWiki before 1.35.6, 1.36.x before 1.36.4, and 1.37.x before 1.37.2. The widthheight, widthheightpage, and nbytes properties of messages are not escaped when used in galleries or Special:RevisionDelete.

Patch / fix

  • bitnami mediawiki 1.35.6, 1.36.4, 1.37.2
  • mediawiki mediawiki 1.35.6, 1.36.4, 1.37.2
  • mediawiki Debian 14, Debian 13, Debian 12 1:1.35.6-1

debian advisories DEBIAN-CVE-2022-28202

  • mediawiki Arch Linux 1.37.2-1

arch linux advisories AVG-2677

Is CVE-2022-28202 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-28202 updated cvss 6.1

mediawiki: xss due to incorrect escaping

  • Red Hat OpenShift Container Platform 3.11 mediawiki
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.20% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
OSV 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
bitnami mediawiki
<1.35.6
>=1.36.0, <1.36.4
>=1.37.0, <1.37.2
1.35.6
1.36.4
1.37.2

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.