Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2026-16634

TOML::XS versions before 0.06 for Perl bundle an unsupported and vulnerable version of tomlc99
Back to all
CVE

CVE-2026-16634

TOML::XS versions before 0.06 for Perl bundle an unsupported and vulnerable version of tomlc99

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The tomlc99 library is no longer maintained, and has an uncontrolled recursion vulnerability publicly reported in the issue tracker.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.

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

http://www.openwall.com/lists/oss-security/2026/07/24/4, https://cpan.org/modules, https://raw.githubusercontent.com/cktan/tomlc99/29076dfd095bbbbd50a3c1b2760d29f4b83e74ac/README.md, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/16xxx/CVE-2026-16634.json, https://metacpan.org/release/FELIPE/TOML-XS-0.06/changes, https://nvd.nist.gov/vuln/detail/CVE-2026-16634, https://github.com/cktan/tomlc99/issues/97, https://github.com/FGasper/p5-TOML-XS, https://github.com/cktan/tomlc17, https://toml.io/en/v1.0.0

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.00512%
EPSS Percentile
0.421%
Introduced Version
0
Fix Available
5597653a83dda2b2ed4634b220b8646cd1545246

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading