Critical severity · published Jun 16, 2025
CVE-2025-32799
Conda-build Vulnerable to Path Traversal via Malicious Tar File
9.8
CVSS
1.3%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
conda-build · conda
< 25.4.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-32799
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-32799
Product
https://github.com/conda/conda-build/blob/834448b995eee02cf1c2e7ca97bcfa9affc77ee5/conda_build/convert.py
Product
https://github.com/conda/conda-build/blob/834448b995eee02cf1c2e7ca97bcfa9affc77ee5/conda_build/render.py
Patch
https://github.com/conda/conda-build/commit/bdf5e0022cec9a0c1378cca3f2dc8c92b4834673
Exploit
https://github.com/conda/conda-build/security/advisories/GHSA-h499-pxgj-qh5h
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