CVE-2026-57432 Affecting perl-5.38 package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-MINIMOSLATEST-PERL538-18020788
- published20 Jul 2026
- disclosed13 Jul 2026
Introduced: 13 Jul 2026
NewCVE-2026-57432 (opens in a new tab)How to fix?
There is no fixed version for Minimos:latest perl-5.38.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perl-5.38 package and not the perl-5.38 package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
Perl versions through 5.43.10 have an integer overflow in S_measure_struct leading to an out-of-bounds heap read in pack and unpack.
S_measure_struct adds each item's size times its repeat count to a running total with no overflow check, so a large repeat count in a pack or unpack template wraps the signed SSize_t total negative. The @, X, and x position codes then guard their moves with a signed length comparison that passes when the length is negative, advancing the buffer pointer out of bounds.
A template derived from untrusted input can read heap memory past the buffer and return it to the caller.
References
- https://www.cve.org/CVERecord?id=CVE-2026-57432
- https://github.com/advisories/GHSA-5g35-5jrj-f39p
- https://osv.dev/vulnerability/MINI-8p26-5vq2-86q9
- https://osv.dev/vulnerability/CVE-2026-57432
- https://github.com/Perl/perl5/commit/40754edc72dd3e513d758153c0e2f0215897740e.patch
- https://github.com/Perl/perl5/commit/5f7eb6bbbe0510964e3fb1d6bb691e5445913e55.patch
- http://www.openwall.com/lists/oss-security/2026/07/13/6