PatchTheCVECVE-2025-32800: Conda-build contains commands and tools to build conda packages
CVE-2025-32800 is a critical-severity flaw (CVSS 9.8) affecting conda-build. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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
Why this priority
- Critical severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.6% (top 49%) |
| CISA exploited list | No |
| Weakness | CWE-1357 |
| Published | 2025-06-16 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2025-32800?
conda-build: upgrade to 25.3.0. Exact commands for each OS are on this page.
Is CVE-2025-32800 being exploited?
CVE-2025-32800 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2025-32800 affect?
CVE-2025-32800 affects conda-build. Severity is critical (CVSS 9.8). 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
How urgent is CVE-2025-32800?
Priority 57/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action
Software pages
Python vulnerabilities · PyPI packages vulnerabilities
Related CVEs
- CVE-2025-32799 CRITICAL 9.8 UPGRADE Conda-build contains commands and tools to build conda packages
- CVE-2025-32798 CRITICAL 9.8 UPGRADE Conda-build contains commands and tools to build conda packages
- CVE-2025-32797 HIGH 7.0 UPGRADE Conda-build contains commands and tools to build conda packages