CVE-2026-46699 Auth bypass in conda-smithy
Attackers can gain write access to conda-forge feedstock repositories by taking over GitHub usernames used for invitation routing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-46699?
CVE-2026-46699 is a high-severity authentication bypass vulnerability in conda-forge conda-smithy, published on 18 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
conda-smithy is a tool for combining a conda recipe with configurations to build using freely hosted CI services into a single repository. Prior to version 3.61.0, a vulnerability in the conda-forge automated webservices allowed unintended write access to feedstock repositories through GitHub username takeover. The root cause is the use of mutable GitHub usernames as identifiers for repository invitation routing, rather than stable, immutable GitHub user IDs. Version 3.61.0 fixes the issue.
Weakness: CWE-284
Which versions are affected by CVE-2026-46699?
How do I fix CVE-2026-46699?
No fix has been published for CVE-2026-46699 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-46699 being exploited?
There is no known exploitation of CVE-2026-46699 in the wild and no public exploit code.
Sources
Also known as GHSA-g95q-3cmj-fvh8.