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OSEC-2026-15

MediumCVSS 4.3 / 10
Published Aug 7, 2026·Last modified Aug 7, 2026
Affected Components(1)
opammirage-crypto-ec
< 2.3.0
Description

The internal Point.of_octets function is missing a length check for compressed points, and thus is raising an exception when a short buffer is provided. This affects all NIST curves (P-256, P-384, P-521) and both Dsa.pub_of_octets and Dh.key_exchange functions.

Fix

The fix is to check the length of the provided buffer.

Timeline

  • July 28th 2026: report to security@ocaml.org
  • August 7th: release of mirage-crypto-pk 2.3.0 and security advisory
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Risk Scores
Base Score
4.3

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the availability of the system.

Threat Intelligence
4.0

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

Related Vulnerabilities
  • CVE-2026-87736
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  • EUVD-2026-74622
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