Vulnerability · Published Sep 2, 2026 · Assigned by VulDB

CVE-2026-84885simular-ai Agent-S CodeAgent code_agent.py denial of service

Medium 4.3

In plain English

A medium-severity security flaw in Agent-S from simular-ai. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.5%top 59.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability has been found in simular-ai Agent-S 0.3.1/0.3.2. This impacts an unknown function of the file code_agent.py of the component CodeAgent. Such manipulation leads to denial of service. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
simular-ai	Agent-S	0.3.10.3.2

Weakness: CWE-404 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

References

VDB-398133 | simular-ai Agent-S CodeAgent code_agent.py denial of service vdb-entry
VDB-398133 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-84885 | CVE Analysis and Report third-party-advisory
Submit #886431 | Simular AI Agent-S 0.3.2 Denial of Service third-party-advisory
https://github.com/outlookgp/CVE/tree/main/AgentS_CodeAgent_Tool_Output_DoS_Report exploit