conda-smithy Has Incorrect Default File Permissions
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
conda-smithy is a tool for combining a conda recipe with configurations to build using freely hosted CI services into a single repository. Prior to version 3.47.1, the travis_headers function in the conda-smithy repository creates files with permissions exceeding 0o600, allowing read and write access beyond the intended user/owner. This violates the principle of least privilege, which mandates restricting file permissions to the minimum necessary. An attacker could exploit this to access configuration files in shared hosting environments. This issue has been patched in version 3.47.1.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| conda-forge | conda-smithy | before 3.47.1 | 3.47.1 | Patch available | CNA |
- conda-smithy Vendorconda-forge Affected before 3.47.1 Fixed in 3.47.1 Patch available CNA
Remediation
- Fix · CNA conda-smithy (conda-forge) Fixed in 3.47.1
Timeline
- 2026-10-02 Threatist record created from CVE-2025-49843
- 2026-11-04 EPSS moved to the 50th–90th percentile
References
Other 3
- https://github.com/conda-forge/conda-smithy/security/advisories/GHSA-h9v8-rrqg-3m95
- https://github.com/conda-forge/conda-smithy/commit/24cc0a55a363479e797c825be3a7f2603ef374a1
- https://github.com/conda-forge/conda-smithy/blob/1dc21086a476f6aeb6c1bad8bf58474bf3a8f8f0/conda_smithy/ci_register.py#L109-L111
More conda-forge vulnerabilities
- TI-2025-20342 RCE in the package conda-forge-metadata CVSS 4.0CRITICAL 9.3
- TI-2025-24594 conda-forge openssl-feedstock writable OPENSSLDIR CVSS 4.0HIGH 7.0
- TI-2025-31611 conda-forge-ci-setup Allows Arbitrary Code Execution via Insecure Version Parsing CVSS 4.0MEDIUM 4.4
- TI-2025-22665 conda-forge infrastructure uses a bad token for Azure's cf-staging access CVSS 4.0CRITICAL 9.3
- TI-2025-23821 conda-forge-webservices has an Unauthorized Artifact Modification Race Condition CVSS 4.0HIGH 7.5
- TI-2026-34328 Improper access control in conda-forge conda-smithy CVSS 3.1HIGH 7.6
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences