CVE-2026-8463
- Source
- https://cve.org/CVERecord?id=CVE-2026-8463
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8463.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-8463
- Downstream
- Published
- 2026-05-13T12:40:35Z
- Modified
- 2026-10-28T02:30:55Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
- Summary
- 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
- Details
-
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.
The auto-detect form of argon2_verify passes encoded_len - 1 as the length argument to memchr without checking that encoded_len is non-zero. When the encoded string is empty, the size_t subtraction underflows to SIZE_MAX and memchr scans adjacent heap memory looking for a '$' separator byte.
A caller that invokes argon2_verify against a stored hash that may legitimately be empty (for example a placeholder row or a NULL column materialised as an empty string) reads out-of-bounds heap memory, which can crash the process or leak the position of an adjacent '$' byte into subsequent parsing.
- Database specific
{ "cna_assigner": "CPANSec", "cwe_ids": [ "CWE-126", "CWE-191" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8463.json" }- References
-
- http://www.openwall.com/lists/oss-security/2026/05/13/4
- https://cpan.org/modules
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8463.json
- https://metacpan.org/release/LEONT/Crypt-Argon2-0.031/changes
- https://nvd.nist.gov/vuln/detail/CVE-2026-8463
- https://github.com/Leont/crypt-argon2/commit/92eac03ce63d541e0ead7ea5a89b9b67ce0c0e64.patch
- https://github.com/Leont/crypt-argon2
Affected packages
Git / github.com/leont/crypt-argon2
Affected ranges
- Type
- GIT
- Repo
- https://github.com/leont/crypt-argon2
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:leont:crypt\\:\\:argon2:*:*:*:*:*:perl:*:*", "range": [ { "introduced": "0.017" }, { "fixed": "0.031" } ], "source": "CPE_RANGE" }, { "range": [ { "fixed": "92eac03ce63d541e0ead7ea5a89b9b67ce0c0e64" } ], "source": "REFERENCES_COMMIT" } ] }