by Kastro
Paper/Archive/CVE-2026-16634

CVE-2026-16634

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

EPSS 0.8%CVSS 9.8
critical.is priorityof 100
41
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 57.4.574 × 2011.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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 The tomlc99 library is no longer maintained, and has an uncontrolled recursion vulnerability publicly reported in the issue tracker.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

Affected

ProductAffectedFixed inSource
TOML::XS< 0.060.06CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refmetacpan.org/release/FELIPE/TOML-XS-0.06/changesrefraw.githubusercontent.com/cktan/tomlc99/29076dfd095bbbbd50a3c1b2760d29f4b83e74ac/README.mdexploitgithub.com/cktan/tomlc99/issues/97refgithub.com/cktan/tomlc17writeuptoml.io/en/v1.0.0refopenwall.com/lists/oss-security/2026/07/24/4