Cross-site scripting (XSS) vulnerability in the RSS Reader extension before 0.2.6 for MediaWiki allows remote attackers to inject arbitrary…

published 2012-12-31 13 y ago modified 2026-06-16 4 mo ago also EUVD-2012-6306

cvss: 4.3; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits: 0; none known

Cross-site scripting (XSS) vulnerability in the RSS Reader extension before 0.2.6 for MediaWiki allows remote attackers to inject arbitrary web script or HTML via a crafted feed.

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-2012-6453 updated 2025-11-21 cvss 5.8

Reader: code execution via HTML in feed titles and bodies

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

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

0.98% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

CVE List CVE-2012-6453
NVD CVE-2012-6453

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.

Summary