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CVE-2026-46699— conda-smithy vulnerable to misrouted repository invitation by conda-forge-webservices[bot] due to GitHub username takeover leading to unintended write access in conda-forge feedstock repository

Quick assessment

Affected
conda-forge conda-smithy
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

conda-forge conda-smithy是conda-forge社区的一个自动化构建conda包的工具。 conda-forge conda-smithy 3.61.0之前版本存在权限许可和访问控制问题漏洞，该漏洞源于使用可变的GitHub用户名作为仓库邀请路由标识符，可能导致通过GitHub用户名接管实现未经授权的写入访问。

CVSS 7.6 · High EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1078.003 · Local Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
conda-forge conda-smithy < 3.61.0 affected
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I. Basic Information for CVE-2026-46699

Vulnerability Information
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Vulnerability Title
conda-smithy vulnerable to misrouted repository invitation by conda-forge-webservices[bot] due to GitHub username takeover leading to unintended write access in conda-forge feedstock repository
Source: CVE Program / CVE List V5
Vulnerability Description
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 3.61.0, a vulnerability in the conda-forge automated webservices allowed unintended write access to feedstock repositories through GitHub username takeover. The root cause is the use of mutable GitHub usernames as identifiers for repository invitation routing, rather than stable, immutable GitHub user IDs. Version 3.61.0 fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
conda-forge conda-smithy 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
conda-forge conda-smithy是conda-forge社区的一个自动化构建conda包的工具。 conda-forge conda-smithy 3.61.0之前版本存在权限许可和访问控制问题漏洞，该漏洞源于使用可变的GitHub用户名作为仓库邀请路由标识符，可能导致通过GitHub用户名接管实现未经授权的写入访问。
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-smithy < 3.61.0 -

II. Public POCs for CVE-2026-46699

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 10475 chars
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III. Intelligence Information for CVE-2026-46699

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Vendor Advisories for CVE-2026-46699 (1)

IV. Related Vulnerabilities

Same product: conda-smithy
Same vendor: conda-forge
Same weakness: CWE-284

V. Comments for CVE-2026-46699

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