Path Traversal in Anaconda Conda-Build
CVE-2025-32799
Conda-build contains commands and tools to build conda packages. Prior to version 25.4.0, the conda-build processing logic is vulnerable to path traversal (Tarslip) attacks due to improper sanitization of tar entry paths. Attackers can craft tar archives containing entries with directory traversal sequences to write files outside the intended extraction directory. This could lead to arbitrary file overwrites, privilege escalation, or code execution if sensitive locations are targeted. This issue has been patched in version 25.4.0.
Vulnerability class: Path Traversal (Directory Traversal)
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: 0.013 (69.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: +0.000
Affected products
- Anaconda Conda-Build
- Conda Conda-Build — versions < 25.4.0
Weakness classification (CWE)
References
- github.com/conda/conda-build/security/advisories/GHSA-h499-pxgj-qh5h (Exploit, Vendor Advisory)
- github.com/conda/conda-build/commit/bdf5e0022cec9a0c1378cca3f2dc8c92b4834673 (Patch)
- github.com/conda/conda-build/blob/834448b995eee02cf1c2e7ca97bcfa9affc77ee5/cond… (Product)
- github.com/conda/conda-build/blob/834448b995eee02cf1c2e7ca97bcfa9affc77ee5/cond… (Product)
Frequently asked questions
- What is CVE-2025-32799?
- CVE-2025-32799 is a critical-severity vulnerability in Anaconda Conda-Build, classified under Path Traversal. CVSS score: 9.8/10. Published 2025-06-16.
- How severe is CVE-2025-32799?
- Critical severity. CVSS v3 base score is 9.8 out of 10.