CVE-2025-32799: medium-severity vulnerability in conda-build
Conda-build Vulnerable to Path Traversal via Malicious Tar File
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.6epss 1.3%
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.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
conda · conda-buildRelated CVEs — conda-build
In the same product, most dangerous first.
CVE-2025-32798HIGHConda-build Allows Arbitrary Code Execution via Malicious Recipe SelectorsEPSS 0.8%CVE-2025-32800HIGHConda-build vulnerable to supply chain attack vector due to pyproject.toml referring to dependencies not present in PyPIEPSS 0.6%CVE-2025-32797MEDIUMConda-build Insecure Build Script Permissions Enabling Arbitrary Code ExecutionEPSS 0.2%
References
https://github.com/conda/conda-build/blob/834448b995eee02cf1c2e7ca97bcfa9affc77ee5/conda_build/convert.pyhttps://github.com/conda/conda-build/blob/834448b995eee02cf1c2e7ca97bcfa9affc77ee5/conda_build/render.pyhttps://github.com/conda/conda-build/commit/bdf5e0022cec9a0c1378cca3f2dc8c92b4834673https://github.com/conda/conda-build/security/advisories/GHSA-h499-pxgj-qh5h