Vulnerability · Published Sep 2, 2026 · Assigned by VulDB

CVE-2026-84886simular-ai Agent-S OCR HTTP API ocr_server.py ImageData resource consumption

Medium 5.3

In plain English

A medium-severity uncontrolled resource consumption 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 0.6% (higher than 51% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.6%top 49.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was determined in simular-ai Agent-S up to 0.3.2. Affected by this vulnerability is the function ImageData of the file gui_agents/s1/utils/ocr_server.py of the component OCR HTTP API. Executing a manipulation of the argument img_bytes can lead to resource consumption. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. 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	0.3.00.3.10.3.2

Weakness: CWE-400, CWE-404 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

References

VDB-398135 | simular-ai Agent-S OCR HTTP API ocr_server.py ImageData resource consumption vdb-entry, technical-description
VDB-398135 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-84886 | CVE Analysis and Report third-party-advisory
Submit #886443 | Simular AI Agent-S 0.3.2 Denial of Service third-party-advisory
https://github.com/hackerguopeng/cve/tree/main/AgentS_OCR_HTTP_Body_Image_DoS_Report exploit