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.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| OCaml | mirage-crypto-ec | unaffected |
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Project Subscriptions
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Advisories
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Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
| Link | Providers |
|---|---|
| https://osv.dev/vulnerability/OSEC-2026-13 |
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History
Wed, 09 Sep 2026 04:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Weaknesses | CWE-295 | |
| References |
| |
| Metrics |
cvssV3_1
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Projects
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MITRE
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-09-09T04:08:54.652Z
Reserved: 2026-09-09T04:08:54.293Z
Link: CVE-2026-87733
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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Weaknesses