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CVE record · CVE-2026-8463

Crypt::Argon2 versions from 0.017 before 0.031 for Perl perform a heap out-of-bounds read in argon2_verify on empty encoded input

CVSS 5.3 MediumEPSS 0.0033 · 25th percentile

Published by the CVE Program (CNA: CPANSec) at 13 May 2026, 12:40 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
LEONT Crypt::Argon2 Package name: Crypt-Argon2 https://cpan.org/modules
  • affected 0.017 to before 0.031 custom
Other versions: unaffected
Identifiers
CVE-2026-8463
CNA
CPANSec
Weakness (CWE)
CWE-126 · CWE-191
Tags
Published
13 May 2026
Updated
13 May 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L ADP (CISA-ADP)
  • CISA KEV Not listed.
  • EPSS 0.0033, the 25th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 13 May 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.