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Advisory record · GHSA-xq8w-9jvx-gm3v

hermes-agent has an Injection issue

CVSS 6.9 MediumEPSS 0.0030 · 23rd percentile

Published by the GitHub Advisory Database at 1 Jun 2026, 06:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
hermes-agentPyPI<=0.19.0No fixed version yet
Identifiers
GHSA-xq8w-9jvx-gm3v · CVE-2026-10221 · PYSEC-2026-3577
Weakness (CWE)
CWE-74 · CWE-707
Tags
Published
1 Jun 2026
Updated
4 Aug 2026

Machine-written summary

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

hermes-agent up to 0.19.0 has an injection flaw in the _compress_context function of run_agent.py that can be exploited remotely. A public exploit exists, and the source gives few details on the impact. The description names 0.12.0 as affected, while the package range lists 0.19.0. No fixed version is listed.

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
6.9 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P CNA (VulDB)
  • CISA KEV Not listed.
  • EPSS 0.0030, the 23rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:41 UTC First seen by agentprime
  2. 31 Oct 2026, 14:41 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.