SEPTEMBER 19, 2026
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Case File

CVE-2026-13346

MEDIUM · CVSS 6.5 EPSS 0.29% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-29 · Last synced 2026-08-28

CyberRota Analysis

AI-Generated

This vulnerability affects users of pip who utilize the `--only-binary` option while downloading packages from potentially malicious package indexes, allowing arbitrary file installation on disk due to improper handling of doubly-encoded URLs. The impact is significant for those environments where pip is used to manage dependencies, particularly in automated or CI/CD pipelines. Organizations that rely on pip for package management should prioritize addressing this issue to mitigate the risk of unauthorized file installations.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-13346
Severity
MEDIUM
CVSS
6.5
EPSS
0.29%

Original NVD Description

pip would incorrectly handle doubly-encoded package URLs from indexes allowing for files to be installed to arbitrary locations on disk even when installing wheels. This vulnerability requires downloading or installing a package from a malicious package index to succeed, malicious packages alone are not able to exploit this vulnerability. Note that this vulnerability only materially impacts users running `pip download` with the `--only-binary` option as installing source distributions from an untrusted index is already an unsafe operation that executes code during install time.

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