Buffer overflow in Leont Crypt\
CVE-2026-2597
Crypt::SysRandom::XS versions before 0.010 for Perl is vulnerable to a heap buffer overflow in the XS function random_bytes(). The function does not validate that the length parameter is non-negative. If a negative value (e.g. -1) is supp…
Vulnerability class: Buffer Overflow
EPSS: 0.003 (21.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Leont Crypt\ — versions \
- Leont Crypt::sysrandom::xs — versions 0
Weakness classification (CWE)
References
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (release-notes, Release Notes)
- 9b29abf9-4ab0-4765-b253-1875cd9b441e (related, Issue Tracking)
Frequently asked questions
- What is CVE-2026-2597?
- CVE-2026-2597 is a high-severity vulnerability in Leont Crypt\, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-02-27.
- How severe is CVE-2026-2597?
- High severity. CVSS v3 base score is 7.5 out of 10.