Conda Constructor Command Injection via Unsanitized User Input (Low)

Description

(conda) Constructor is a tool which allows constructing an installer for a collection of conda packages. Prior to version 3.11.3, shell installer scripts process the installation prefix (user_prefix) using an eval statement, which executes unsanitized user input as shell code. Although the script runs with user privileges (not root), an attacker could exploit this by injecting arbitrary commands through a malicious path during installation. Exploitation requires explicit user action. This issue has been patched in version 3.11.3.

Scores

EPSS (exploitation in 30 days)

0.16% · top 95% of all CVEs (7 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: None 0.0.

Weakness

• CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') (opens in a new tab)All about CWE-77 and its CVEs

Affected products

• conda · constructor

  • affected < 3.11.3

References (2)

• https://github.com/conda/constructor/security/advisories/GHSA-44q9-rg2q-5g99 (opens in a new tab)x_refsource_CONFIRM
• https://github.com/conda/constructor/commit/ce4c2d58cfcde2f62d038fb8aba013176c77a0b1 (opens in a new tab)x_refsource_MISC

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2025-49823](https://trackcve.app/badge/CVE-2025-49823.svg)](https://trackcve.app/cve/CVE-2025-49823)

Record last updated 17 Jun 2025, 15:52 UTC.