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CVE-2020-26120

MEDIUM
6.1
CVSS Score
Published: September 27, 2020 at 08:07 PM UTC
Updated: June 17, 2026 at 03:07 AM UTC
2 products affected across 2 vendorsFedoraMediaWiki

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Severity
MEDIUM6.1
Exploit prediction
EPSS 1.0%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Fedora· Fedora Projectrpm
95%
33
MediaWiki· Mediawiki
95%
v < 1.34.4
Affected range stops below 1.34.4, so it looks safe — our inference, not a vendor statement

References (3)

x_refsource_MISCVendor Advisory
Source: [email protected]
https://gerrit.wikimedia.org/r/q/I42e079bc875d17b336ab015f3678eaedc26e10ea
Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6/
x_refsource_MISCExploitIssue TrackingPatchVendor Advisory
Source: [email protected]
https://phabricator.wikimedia.org/T262213

CVSS

6.1MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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