CVE-2026-126673
Data::Dump::Streamer versions before 3.00 for Perl allow code injection via unescaped Regexp patterns in _dump_qr
Data::Dump::Streamer versions before 3.00 for Perl allow code injection via unescaped Regexp patterns in _dump_qr. A Regexp's pattern is written into a qr literal without escaping "$" or "@", so "@{[ ... ]}" and "${\ ... }" in the pattern run as code when the dump is evaluated. An already escaped delimiter gets a second backslash, which leaves the delimiter bare and ends the qr literal early. An attacker who supplies a pattern that an application compiles, dumps and later restores with eval or do can run arbitrary Perl code.
Fixes and workarounds
Fix
Upgrade to Data-Dump-Streamer 3.00 or later.
Source: CNA: CPANSecWorkaround
For deployments that cannot upgrade to 3.00, which requires Perl 5.18 and a C compiler, do not restore dumps that contain Regexps compiled from untrusted input.
Source: CNA: CPANSecAffected products and versions
| Product | Versions | Authority |
|---|---|---|
Data-Dump-Streamer
cpan |
≥ 0; < 3.00 (affected, custom)
Other versions: unaffected |
CNA: CPANSec |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://metacpan.org/release/YVES/Data-Dump-Streamer-3.00/source/ChangesCNA: CPANSec · release-notes
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