CVE-2026-87733

EUVD-2026-74619
An issue was discovered in the mirage-crypto-ec function before 2.2.0 for OCaml. The ECDSA functions {P256,P384,P521}.Dsa.pub_of_octets accept 0x00, the encoding of the point at infinity, as a public key. With that public key, signatures can be forged without a private key.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.2 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 1.16%
Debian logo
Debian Releases
Debian Product
Codename
ocaml-mirage-crypto
bookworm
vulnerable
forky
2.4.0-1
fixed
sid
2.4.0-1
fixed
trixie
vulnerable
Common Weakness Enumeration
References
https://osv.dev/vulnerability/OSEC-2026-13
https://osv.dev/vulnerability/OSEC-2026-13