Medium severity · published Sep 27, 2020
CVE-2020-26120
XSS exists in the MobileFrontend extension for MediaWiki before 1.34.4 because section.line is mishandled during regex section line replacement from PageGateway
6.1
CVSS
1%
EPSS
No
On KEV
Description
XSS exists in the MobileFrontend extension for MediaWiki before 1.34.4 because section.line is mishandled during regex section line replacement from PageGateway. Using crafted HTML, an attacker can elicit an XSS attack via jQuery's parseHTML method, which can cause image callbacks to fire even without the element being appended to the DOM.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 62% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
33 · source: NVD
ME
Mediawiki · Mediawiki
before 1.34.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-26120
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-26120
Vendor Advisory
https://gerrit.wikimedia.org/r/q/I42e079bc875d17b336ab015f3678eaedc26e10ea
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6/
Exploit
https://phabricator.wikimedia.org/T262213
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