EUVD-2025-210396
GHSA-754r-h5mg-r795
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (CPANSec) · only source for this CVE.
CVSS VectorVendor: CPANSec
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionCVE.org
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.
Analysis
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.
The html.Parse function in golang.org/x/net/html has an infinite parsing loop when processing certain inputs, which can
Session::Cookie in the HTML::EP module 0.2011 for Perl does not properly use the Storable::thaw function, which allows r
Heap information disclosure in HTML::Entities for Perl (versions before 3.84) allows remote attackers to leak adjacent h
Html contains a vulnerability that allows attackers to denial of service (DoS) if an attacker provides specially crafted
Same technique Memory Corruption
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External POC / Exploit Code
Leaving vuln.today