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Advisory record · GHSA-j4h9-pm27-4rfw

OctoPrint has possible file exfiltration via query parameters on upload endpoints

CVSS 7.0 HighEPSS 0.0032 · 25th percentile

Published by the GitHub Advisory Database at 23 Jun 2026, 18:03 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
octoprintPyPI<1.11.8 || >=2.0.0rc1, <2.0.0rc31.11.8, 2.0.0rc3
Identifiers
GHSA-j4h9-pm27-4rfw · CVE-2026-54134 · PYSEC-2026-2687
Weakness (CWE)
CWE-73 · CWE-436
Tags
Published
23 Jun 2026
Updated
21 Aug 2026

Machine-written summary

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

OctoPrint versions up to and including 1.11.7, and 2.0.0rc1 and 2.0.0rc2, are vulnerable. An attacker with the file upload permission can move arbitrary readable files from the host into the upload folder, where they can be downloaded, exposing secrets such as config data. Upgrade to 1.11.8 or 2.0.0rc3.

Written 5 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
7.0 High 4.0 CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0032, the 25th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:39 UTC First seen by agentprime
  2. 31 Oct 2026, 14:39 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.