CVE catalog
CVE-2026-87733
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
- Severity
- Medium · CVSS 6.2
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.15% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | ocaml-mirage-crypto | sid | 2.4.1-1 | fixed |
| Debian | ocaml-mirage-crypto | forky | 2.4.1-1 | fixed |
| Debian | ocaml-mirage-crypto | trixie | 2.0.0-1 | vulnerable |
| Debian | ocaml-mirage-crypto | bookworm | 0.10.7-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | ocaml-mirage-crypto | source | sid | 2.2.0-1 | not yet assigned | Not reported | Not reported |
| Debian | ocaml-mirage-crypto | source | forky | 2.2.0-1 | not yet assigned | Not reported | Not reported |
| Debian | ocaml-mirage-crypto | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | ocaml-mirage-crypto | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
Notes
[trixie] ocaml-mirage-crypto: Minor issue [bookworm] ocaml-mirage-crypto: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libmirage-crypto-ocaml]Affected
Source package: [ocaml-mirage-crypto]
Details (2)
0.10.7-1+b3· amd64 · bookwormAffected
nvd · ocaml-mirage-crypto · debian · bookworm; nvd · ocaml-mirage-crypto · debian · 12
0.10.7-1+b3· arm64 · bookwormAffected
nvd · ocaml-mirage-crypto · debian · bookworm; nvd · ocaml-mirage-crypto · debian · 12
- [libmirage-crypto-ocaml-dev]Affected
Source package: [ocaml-mirage-crypto]
Details (2)
0.10.7-1+b3· amd64 · bookwormAffected
nvd · ocaml-mirage-crypto · debian · bookworm; nvd · ocaml-mirage-crypto · debian · 12
0.10.7-1+b3· arm64 · bookwormAffected
nvd · ocaml-mirage-crypto · debian · bookworm; nvd · ocaml-mirage-crypto · debian · 12
[Debian 13 (Trixie)]
- [libmirage-crypto-ocaml]Affected
Source package: [ocaml-mirage-crypto]
Details (2)
2.0.0-1+b5· amd64 · trixieAffected
nvd · ocaml-mirage-crypto · debian · 13
2.0.0-1+b5· arm64 · trixieAffected
nvd · ocaml-mirage-crypto · debian · 13
- [libmirage-crypto-ocaml-dev]Affected
Source package: [ocaml-mirage-crypto]
Details (2)
2.0.0-1+b5· amd64 · trixieAffected
nvd · ocaml-mirage-crypto · debian · 13
2.0.0-1+b5· arm64 · trixieAffected
nvd · ocaml-mirage-crypto · debian · 13
Observed: