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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.006 (49.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.006 · change: +0.003
Affected products
- Timlegge Crypt\ — versions \
- Timlegge Crypt::nacl::sodium — versions 0
- Timlegge Crypt\:\:nacl\:\:sodium
Weakness classification (CWE)
References
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (related, Product, Release Notes)
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (Patch, patch)
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (Patch, patch)
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.