Vulnerability · CVE-2026-2588
Crypt::NaCl::Sodium versions through 2.001 for Perl has an integer overflow flaw on 32-bit systems.
Published Feb 23, 2026 · catalog updated Jun 17, 2026 · Crypt::NaCl::Sodium versions through 2.001
Check if you run it
No confirmed exploitation is on record for CVE-2026-2588. EPSS is 0.66%. Act only if a listed version of Crypt::NaCl::Sodium versions through 2.001 is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (Crypt::NaCl::Sodium versions through 2.001).
- No version range is stored. A customer cannot check an installed version against this record.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Critical9.1
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.66%
- Remediation
- Advisory link
- Affected products
- cpe timlegge/crypt
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.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe timlegge/crypt\
How to fix CVE-2026-2588
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-2588. EPSS is 0.66%. Act only if a listed version of Crypt::NaCl::Sodium versions through 2.001 is installed.
Which versions are affected?
Compare what you have installed with \. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-190: Integer Overflow. EPSS 0.66%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Feb 23, 2026 · NIST NVD
Detected
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.
Jun 17, 2026 · NIST NVD
Updated
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.
Sources
- CVE.orgVulnerability recordCVE-2026-2588
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-2588
30-day exploitation probability 0.7%
first.org - NIST NVDVulnerability recordCVE-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
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.