CVE detail
CVE-2025-15646
HTML::Gumbo versions before 0.19 for Perl disclose heap memory via type confusion. Support for the <template> element was added to libgumbo 0.10.0 in 2015, but the walk_tree function in lib/HTML/Gumbo.xs was not updated to support it. The element was treated as a text-node, where strlen() over-reads the heap block that the pointer addresses. Any caller that runs parse() with the default format => 'string', or with format => 'tree', on input containing a <template> element serializes the over-read bytes into the returned result, disclosing bounded heap contents. format => 'callback' reaches a croak on the unhandled node type and is unaffected.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 16.1 · diversity 16.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 4
- within the 30d window
- Peak daily
- 4
- highest bucket
Evidence
Source links by recency
4 source links · newest first
- http://www.openwall.com/lists/oss-security/2026/07/01/7www.openwall.com
No excerpt available.
Exploitwww.openwall.comJul 1, 2026, 4:16 PM No excerpt available.
Release Notesmetacpan.orgJul 1, 2026, 4:16 PM- https://github.com/bestpractical/HTML-Gumbo/commit/15c0598909d4a64f47ef0a1abc5051f4e113c186.patchgithub.com
No excerpt available.
Exploitgithub.comJul 1, 2026, 4:16 PM - https://bugs.debian.org/1104789bugs.debian.org
No excerpt available.
Issue Trackingbugs.debian.orgJul 1, 2026, 4:16 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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