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Advisory record · GHSA-9q47-3cm2-2rp8

pyLoad: Rate-Limit Bypass and Audit-Log Spoofing via Trusted Client-Controlled `X-Forwarded-For` Header

CVSS 4.0, no score published

Published by the GitHub Advisory Database at 9 Oct 2026, 17:09 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
pyload-ngPyPI=0.5.0b3.dev101No fixed version yet
Identifiers
GHSA-9q47-3cm2-2rp8
Weakness (CWE)
CWE-290
Tags
Published
9 Oct 2026
Updated
9 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

pyLoad 0.5.0b3 (pyload-ng package) uses the client-supplied X-Forwarded-For header, taking its leftmost value, as the client IP for rate limiting and security logging. An unauthenticated remote attacker can send a different header value on each request to bypass rate limits, or spoof the source IP recorded for login and API-key authentication failures. No fixed version is listed. The source suggests that setting no trusted-proxy configuration does not prevent this.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
Not published None 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 14:08 UTC First seen by agentprime
  2. 31 Oct 2026, 14:08 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.