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CVE-2025-32784— conda-forge-webservices has an Unauthorized Artifact Modification Race Condition

Quick assessment

Affected
conda-forge conda-forge-webservices
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

conda-forge-webservices是conda-forge开源的一个部署用于运行condaforge管理命令和linting的web应用程序。 conda-forge-webservices 2025.4.10之前版本存在安全漏洞，该漏洞源于竞争条件，可能导致恶意构件发布。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.25% · P16
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I. Basic Information for CVE-2025-32784

Vulnerability Information
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Vulnerability Title
conda-forge-webservices has an Unauthorized Artifact Modification Race Condition
Source: CVE Program / CVE List V5
Vulnerability Description
conda-forge-webservices is the web app deployed to run conda-forge admin commands and linting. In versions prior to 2025.4.10, a race condition vulnerability has been identified in the conda-forge-webservices component used within the shared build infrastructure. This vulnerability, categorized as a Time-of-Check to Time-of-Use (TOCTOU) issue, can be exploited to introduce unauthorized modifications to build artifacts stored in the cf-staging Anaconda channel. Exploitation may result in the unauthorized publication of malicious artifacts to the production conda-forge channel. The core vulnerability results from the absence of atomicity between the hash validation and the artifact copy operation. This gap allows an attacker, with access to the cf-staging token, to overwrite the validated artifact with a malicious version immediately after hash verification, but before the copy action is executed. As the cf-staging channel permits artifact overwrites, such an operation can be carried out using the anaconda upload --force command. This vulnerability is fixed in 2025.4.10.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Source: CVE Program / CVE List V5
Vulnerability Title
conda-forge-webservices 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
conda-forge-webservices是conda-forge开源的一个部署用于运行condaforge管理命令和linting的web应用程序。 conda-forge-webservices 2025.4.10之前版本存在安全漏洞，该漏洞源于竞争条件，可能导致恶意构件发布。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
conda-forge conda-forge-webservices < 2025.4.10 -

II. Public POCs for CVE-2025-32784

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III. Intelligence Information for CVE-2025-32784

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Patches & Fixes for CVE-2025-32784 (1)

IV. Related Vulnerabilities

Same product: conda-forge-webservices
Same vendor: conda-forge
Same weakness: CWE-367

V. Comments for CVE-2025-32784

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