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1.3

PyPI usestrix: Untrusted Code Injection via System Prompt

CVE-2026-15519 · published 3 months ago
Summary

The usestrix library, used to handle PyPI packages, has a security flaw that allows an attacker to inject malicious code from an untrusted source. This could happen remotely and potentially harm your system. We recommend updating to a fixed version of usestrix to mitigate this risk.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
usestrix strix 1.0.0
Original advisory text
A vulnerability was found in usestrix strix up to 1.0.2. This affects an unknown function of the file system_prompt.jinja of the component PyPI Handler. Performing a manipulation results in inclusi...
A vulnerability was found in usestrix strix up to 1.0.2. This affects an unknown function of the file system_prompt.jinja of the component PyPI Handler. Performing a manipulation results in inclusion of functionality from untrusted control sphere. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is reported as difficult. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
1.3 Low
Exploitation
<1% chance of attack within 30 days
Type
CWE-829Inclusion of Functionality from Untrusted Control Sphere
Timeline
Published13 Jul 2026
Updated4 Nov 2026
First seen13 Jul 2026
Sources
CVE-2026-15519 · NVD
CVE-2026-15519 · MITRE
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