Integer overflow in Timlegge Crypt\

CVE-2026-2588

Crypt::NaCl::Sodium versions through 2.001 for Perl has an integer overflow flaw on 32-bit systems. Sodium.xs casts a STRLEN (size_t) to unsigned long long when passing a length pointer to libsodium functions. On 32-bit systems size_t is typically 32-bits while an unsigned long long is at least 64-bits.

Vulnerability class: Integer Overflow

EPSS: 0.003 (27.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-2588?
CVE-2026-2588 is a critical-severity vulnerability in Timlegge Crypt\, classified under Integer Overflow or Wraparound. CVSS score: 9.1/10. Published 2026-02-23.
How severe is CVE-2026-2588?
Critical severity. CVSS v3 base score is 9.1 out of 10.