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6.5 Medium

CVE-2025-11683 YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential…

Description

YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure Missing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read The issue is seen with complex YAML files with a hash of all keys and empty values.  There is no indication that the issue leads to accessing memory outside that allocated to the module.

Affected products and versions

Product Affected versions Fixed in
YAML::Syck 1.36 earliest → < 1.36 1.36

References

Timeline

  1. Published
  2. Last modified

Other CVEs of YAML::Syck

The 7 CVEs of YAML::Syck →
CVE-2026-57077 YAML::Syck versions before 1.47 for Perl allow an out-of-bounds read via an unbounded newline scan in newline_len 7.7 High CVE-2026-57076 YAML::Syck versions before 1.47 for Perl allow a heap use-after-free via an anchor name reused as an anchors-table key… 7.8 High CVE-2026-57075 YAML::Syck versions before 1.47 for Perl allow an out-of-bounds read via a signed-char lookup-table index in… 9.1 Critical CVE-2026-13713 YAML::Syck versions before 1.47 for Perl allow a use-after-free and double-free via an anchor node freed while still… 6.2 Medium
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