CVE-2026-6412 Continued acceptance of SHA-1/MD5 digests in certificate processing
Low 2.3
Published
Updated
Check this codebase for CVE-2026-6412 and fix it if it is affected.
What it is: CVE-2026-6412 is a low-severity vulnerability in Wolfssl Wolfssl, published on 25 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-6412 in the wild and no public exploit code.
Affected product: Wolfssl Wolfssl. 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-2026-6412/ (Markdown: https://insights.sbomify.com/CVE-2026-6412/index.md)
wolfSSL continues to accept weak SHA-1 and MD5 digests in certificate processing, potentially allowing security bypasses.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-6412?
CVE-2026-6412 is a low-severity vulnerability in Wolfssl Wolfssl, published on 25 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Certificate policy and RFC 8446 compliance concerns regarding the continued acceptance of SHA-1/MD5 in certificate processing.
Weakness: CWE-327
Which versions are affected by CVE-2026-6412?
It affects 1 product.
Products include Wolfssl Wolfssl.
How do I fix CVE-2026-6412?
Apply the vendor's patch.
Is CVE-2026-6412 being exploited?
There is no known exploitation of CVE-2026-6412 in the wild and no public exploit code.
Other vulnerabilities in Wolfssl Wolfssl
Sources
Also known as DEBIAN-CVE-2026-6412, GHSA-w3gw-f9wr-g6qx, JLSEC-2026-750, UBUNTU-CVE-2026-6412.