Vulnerability in Anaconda Conda-Build
CVE-2025-32800
Conda-build contains commands and tools to build conda packages. Prior to version 25.3.0, the pyproject.toml lists conda-index as a Python dependency. This package is not published in PyPI. An attacker could claim this namespace and upload arbitrary (malicious) code to the package, and then exploit pip install commands by injecting the malicious dependency in the solve. This issue has been fixed in version 25.3.0. A workaround involves using --no-deps for pip install-ing the project from the repository.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (48.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.001
Affected products
- Anaconda Conda-Build
- Conda Conda-Build — versions < 25.3.0
Weakness classification (CWE)
References
- github.com/conda/conda-build/security/advisories/GHSA-83gh-p93g-cwgx (Vendor Advisory)
- github.com/conda/conda-build/commit/f5a6aeef0d5d6940b8c2a88796910dc7476a62bb (Patch)
- drive.google.com/file/d/18qe97zxcpTn2l84187A9meGCi2Wg-n_Y/view (Technical Description, Exploit)
Frequently asked questions
- What is CVE-2025-32800?
- CVE-2025-32800 is a critical-severity vulnerability in Anaconda Conda-Build, classified under CWE-1357. CVSS score: 9.8/10. Published 2025-06-16.
- How severe is CVE-2025-32800?
- Critical severity. CVSS v3 base score is 9.8 out of 10.