Vulnerability · Published Jun 1, 2026 · Assigned by VulDB

CVE-2026-10223NousResearch hermes-agent memory_tool.py _scan_memory_content injection

Medium 6.3

In plain English

A medium-severity injection in hermes-agent from NousResearch. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.2%top 86.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A weakness has been identified in NousResearch hermes-agent up to 2026.4.30. This affects the function _scan_memory_content of the file tools/memory_tool.py. This manipulation causes injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	hermes-agent	0.15.0	GHSA-33qv-c5qm-799v
PyPI	hermes-agent	0.15.0	PYSEC-2026-3575

Affected products (as reported)

Vendor	Product	Versions
NousResearch	hermes-agent	2026.4.02026.4.12026.4.22026.4.32026.4.42026.4.52026.4.62026.4.7

Weakness: CWE-74, CWE-707 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-367502 | NousResearch hermes-agent memory_tool.py _scan_memory_content injection vdb-entry, technical-description
VDB-367502 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-10223 | CVE Analysis and Report third-party-advisory
Submit #822021 | NousResearch hermes-agent <= v2026.4.30 Injection (CWE-74) third-party-advisory
https://gist.github.com/YLChen-007/a1fb77ad2488c545a35d0f66356ea7b4 exploit