Critical severity · published Feb 22, 2026
CVE-2026-2588
Crypt::NaCl::Sodium versions through 2.001 for Perl has an integer overflow flaw on 32-bit systems
9.1
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CR
Crypt::NaCl::Sodium · TIMLEGGE
through 2.001 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2588
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2588
Patch
https://github.com/cpan-authors/crypt-nacl-sodium/commit/557388bdb4da416a56663cda0154b80cd524395c.patch
Patch
https://github.com/cpan-authors/crypt-nacl-sodium/commit/8cf7f66ba922443e131c9deae1ee00fafe4f62e4.patch
Product
https://metacpan.org/release/TIMLEGGE/Crypt-NaCl-Sodium-2.001/source/Sodium.xs#L2119
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Crypt::NaCl::Sodium versions through 2.002 for Perl has potential integer overflows