Integer overflow in Haarg Storable
CVE-2026-57433
Storable versions before 3.41 for Perl have a signed integer overflow when deserializing a crafted SX_HOOK record. retrieve_hook_common reads a signed 32-bit item count from an SX_HOOK record and calls av_extend with that count plus one. A count of I32_MAX wraps the addition to a negative value. A crafted blob passed to thaw or retrieve triggers the overflow; av_extend receives the negative count and dies with a panic, terminating the deserialization.
Vulnerability class: Integer Overflow
EPSS: 0.006 (44.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Haarg Storable — versions 0
- Nwclark Storable
Weakness classification (CWE)
References
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (Patch, patch)
- af854a3a-2127-422b-91ae-364da2661108 (Patch, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-57433?
- CVE-2026-57433 is a critical-severity vulnerability in Haarg Storable, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2026-07-13.
- How severe is CVE-2026-57433?
- Critical severity. CVSS v3 base score is 9.8 out of 10.