Detections
Analytics
SCA: security update for xhtml-purifier (GHSA-j8r4-32c5-33rc)
medium Tenable Self-Hosted Container Security Plugin ID 448341
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- xhtml-purifier is a Node.js library to take in raw/unknown/untrusted HTML and output cleaned, purified,
trusted HTML. Versions prior to 0.4.3 do not HTML-entity-encode attribute values when serializing its
sanitized output. In attributeString() (XHTMLPurifier.js, around line 148) the attribute value is
concatenated directly into a double-quoted attribute without encoding. As a result, an attacker-controlled
value in any allowed attribute (class, style, title, alt, src, href) can include a double-quote character
to break out of the attribute and inject an additional attribute, such as a JavaScript event handler (for
example onmouseover or onerror). The injected handler survives sanitization and executes when the output
is rendered, which is a sanitizer bypass leading to cross-site scripting. The fix in version 0.4.3 HTML-
entity-encodes attribute values before serialization. (CVE-2026-61784)
Solution
Update the xhtml-purifier library and its related packages to version 0.4.3 or later.See Also
Plugin Details
Severity: Medium
ID: 448341
Version: Revision 1.1
Type: Local
Family: SCA Checks
Published: 9/25/2026
Updated: 9/25/2026
Risk Information
VPR
Risk Factor: Low
Score: 2.3
Percentile: 9.98
Vendor
Vendor Severity: Medium
CVSS v2
Risk Factor: Medium
Base Score: 6.4
Temporal Score: 4.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N
CVSS Score Source: CVE-2026-61784
CVSS v3
Risk Factor: Medium
Base Score: 6.1
Temporal Score: 5.3
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
Exploit Ease: No known exploits are available
Patch Publication Date: 9/24/2026
Vulnerability Publication Date: 9/24/2026
Reference Information
CVE: CVE-2026-61784