CVE-2026-44602 Null dereference in Tor
Low 3.7
Published
Updated
Check this codebase for CVE-2026-44602 and fix it if it is affected.
What it is: CVE-2026-44602 is a low-severity vulnerability in torproject Tor, published on 7 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-44602 in the wild and no public exploit code.
Affected product: torproject Tor. 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-2026-44602/ (Markdown: https://insights.sbomify.com/CVE-2026-44602/index.md)
A remote attacker can cause a denial of service in Tor by sending an out-of-order CERT cell, triggering a NULL pointer dereference.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-44602?
CVE-2026-44602 is a low-severity vulnerability in torproject Tor, published on 7 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Tor before 0.4.9.7 has a NULL pointer dereference when a CERT cell is received out of order, aka TROVE-2026-006.
Weakness: CWE-476
Which versions are affected by CVE-2026-44602?
It affects 1 product.
Products include Torproject Tor.
How do I fix CVE-2026-44602?
Upgrade to a fixed version.
Is CVE-2026-44602 being exploited?
There is no known exploitation of CVE-2026-44602 in the wild and no public exploit code.
Other vulnerabilities in torproject Tor
Sources
Also known as DEBIAN-CVE-2026-44602, GHSA-323g-q36v-hmmc, UBUNTU-CVE-2026-44602.