PT-2026-21469 · Libsodium+1 · Libsodium+1

Timothy Legge · Published 2026-02-14 · Updated 2026-03-04 · CVE-2026-2588

Positive Technologies (AI Summary)

CVSS v2.0

9.4

Critical

Base vector

AV:N/AC:L/Au:N/C:N/I:C/A:C

Name of the Vulnerable Software and Affected Versions Crypt::NaCl::Sodium versions through 2.001

Description The software contains an integer overflow flaw on 32-bit systems. Specifically, the Sodium.xs component casts a STRLEN (size t) to an 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.

Recommendations Update to a version of Crypt::NaCl::Sodium later than 2.001.

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

BDU:2026-05166

CVE-2026-2588

Affected Products

Crypt::Nacl::Sodium

Libsodium

References · 14

• https://github.com/cpan-authors/crypt-nacl-sodium/commit/8cf7f66ba922443e131c9deae1ee00fafe4f62e4.patch · Patch
• https://github.com/cpan-authors/crypt-nacl-sodium/commit/557388bdb4da416a56663cda0154b80cd524395c.patch · Patch
• https://bdu.fstec.ru/vul/2026-05166 · Security Note
• https://osv.dev/vulnerability/CVE-2026-2588 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-2588 · Security Note
• https://t.me/CVEtracker/45460 · Telegram Post
• https://t.me/cveNotify/152794 · Telegram Post
• https://metacpan.org/release/TIMLEGGE/Crypt-NaCl-Sodium-2.001/source/Sodium.xs#L2119 · Note
• https://twitter.com/CVEarity/status/2025827502124654848 · Twitter Post
• https://t.me/cveNotify/154051 · Telegram Post
• https://twitter.com/TheHackerWire/status/2026031903690850391 · Twitter Post
• https://twitter.com/cracbot/status/2027338046975402488 · Twitter Post
• https://twitter.com/CVEnew/status/2025809039091990575 · Twitter Post
• https://twitter.com/cracbot/status/2027700346710331897 · Twitter Post