CVE-2026-57077 (GCVE-0-2026-57077)

Vulnerability from cvelistv5 – Published: 2026-07-16 21:41 – Updated: 2026-07-17 13:05
VLAI
Title
YAML::Syck versions before 1.47 for Perl allow an out-of-bounds read via an unbounded newline scan in newline_len
Summary
YAML::Syck versions before 1.47 for Perl allow an out-of-bounds read via an unbounded newline scan in newline_len. In the bundled libsyck newline_len and is_newline dereference the scan pointer, and the following byte for a "\r\n" pair, with no NUL-terminator or bounds check. During block-scalar lexing at a document boundary the scan runs one byte past the heap lexer buffer. This is an incomplete fix of CVE-2025-11683, on a lexer path the earlier fix did not cover. Any caller that runs Load or LoadFile on an untrusted document with a block scalar at a document boundary reaches the over-read.
Severity
7.7 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-17 13:05 UTC
CWE
Assigner
CPANSec CNA under the redhat root
CNA scorecard C 61/100 over 360 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
TODDR YAML::Syck Affected: 0 , < 1.47 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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