CVE-2026-87735 An issue was discovered in the mirage-crypto-pk package before 2.3.0 for OCaml.
Medium 4.3
Published
Updated
Check this codebase for CVE-2026-87735 and fix it if it is affected.
What it is: CVE-2026-87735 is a medium-severity vulnerability in OCaml mirage-crypto-pk, published on 9 Sep 2026.
Exploitation: There is no known exploitation of CVE-2026-87735 in the wild and no public exploit code.
Affected product: OCaml mirage-crypto-pk. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-87735/ (Markdown: https://insights.sbomify.com/CVE-2026-87735/index.md)
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-87735?
CVE-2026-87735 is a medium-severity vulnerability in OCaml mirage-crypto-pk, published on 9 Sep 2026.
Official description
An issue was discovered in the mirage-crypto-pk package before 2.3.0 for OCaml. There is an undocumented exception for a small message during RSA decryption or encryption.
Weakness: CWE-1284
Which versions are affected by CVE-2026-87735?
How do I fix CVE-2026-87735?
Upgrade to a fixed version.
Is CVE-2026-87735 being exploited?
There is no known exploitation of CVE-2026-87735 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-87735, GHSA-7mc7-qjpc-23j7, OSEC-2026-14, UBUNTU-CVE-2026-87735.