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Fencer Intel
medium 4.3

CVE-2010-2479 json

HTML Purifier Cross-site Scripting (XSS) vulnerability

published 16y ago modified 4mo ago also GHSA-6rm6-mjmh-86jq , EUVD-2022-2859

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

Cross-site scripting (XSS) vulnerability in HTML Purifier before 4.1.1, as used in Mahara and other products, when the browser is Internet Explorer, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Patch / fix

  • packagist ezyang/htmlpurifier 4.1.1
  • php-htmlpurifier Debian 14, Debian 12 4.1.1+dfsg1-1

debian advisories DEBIAN-CVE-2010-2479

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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-2010-2479 updated cvss 4.3

sahana: XSS flaw in embedded HTML Purifier allows remote arbitrary web script injection

  • 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

2.01% chance of exploitation in the next 30 days, higher than 80% 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

Affected packages

ecosystem package affected fixed in
packagist ezyang/htmlpurifier
<4.1.1
4.1.1

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.