CVE-2026-16634
TOML::XS versions before 0.06 for Perl bundle an unsupported and vulnerable version of tomlc99
Description
TOML::XS versions before 0.06 for Perl bundle an unsupported and vulnerable version of tomlc99. The tomlc99 library is no longer maintained, and has an uncontrolled recursion vulnerability publicly reported in the issue tracker. Any caller that passes untrusted TOML to from_toml risks a stack overflow from a deeply-nested document. TOML::XS version 0.06 or later uses the successor tomlc17 library.
INFO
Published Date :
July 24, 2026, 10:16 a.m.
Last Modified :
July 24, 2026, 8:47 p.m.
Remotely Exploit :
No
Source :
9b29abf9-4ab0-4765-b253-1875cd9b441e
Affected Products
The following products are affected by CVE-2026-16634
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update TOML::XS to version 0.06 or later.
- Remove the unsupported tomlc99 library.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-16634.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-16634 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-16634
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-16634 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-16634 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Jul. 24, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/07/24/4 -
New CVE Received by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Jul. 24, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/FGasper/p5-TOML-XS', 'vendor': 'FELIPE', 'product': 'TOML::XS', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '0.06', 'versionType': 'custom'}], 'packageName': 'TOML-XS', 'collectionURL': 'https://cpan.org/modules', 'defaultStatus': 'unaffected'}] Added Description TOML::XS versions before 0.06 for Perl bundle an unsupported and vulnerable version of tomlc99. The tomlc99 library is no longer maintained, and has an uncontrolled recursion vulnerability publicly reported in the issue tracker. Any caller that passes untrusted TOML to from_toml risks a stack overflow from a deeply-nested document. TOML::XS version 0.06 or later uses the successor tomlc17 library. Added CWE CWE-1104 Added Reference https://github.com/cktan/tomlc17 Added Reference https://github.com/cktan/tomlc99/issues/97 Added Reference https://metacpan.org/release/FELIPE/TOML-XS-0.06/changes Added Reference https://raw.githubusercontent.com/cktan/tomlc99/29076dfd095bbbbd50a3c1b2760d29f4b83e74ac/README.md Added Reference https://toml.io/en/v1.0.0