CVE-2025-32798: high-severity vulnerability in conda-build
Conda-build Allows Arbitrary Code Execution via Malicious Recipe Selectors
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.2epss 0.8%
Conda-build contains commands and tools to build conda packages. Prior to version 25.4.0, the conda-build recipe processing logic has been found to be vulnerable to arbitrary code execution due to unsafe evaluation of recipe selectors. Currently, conda-build uses the eval function to process embedded selectors in meta.yaml files. This approach evaluates user-defined expressions without proper sanitization, which allows arbitrary code to be executed during the build process. As a result, the integrity of the build environment is compromised, and unauthorized commands or file operations may be performed. The vulnerability stems from the inherent risk of using eval() on untrusted input in a context intended to control dynamic build configurations. By directly interpreting selector expressions, conda-build creates a potential execution pathway for malicious code, violating security assumptions. This issue has been patched in version 25.4.0.
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
conda · conda-buildRelated CVEs — conda-build
In the same product, most dangerous first.
CVE-2025-32799MEDIUMConda-build Vulnerable to Path Traversal via Malicious Tar FileEPSS 1.3%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%