Vulnerability details

CVE-2026-72776

Fosowl agenticSeek

AgenticSeek Unauthenticated RCE via /query API Endpoint

CVSS 4.0

9.3Critical

Official description

AgenticSeek (commit fc242c7) contains an unauthenticated remote code execution vulnerability that allows any network-adjacent attacker to execute arbitrary commands by submitting crafted queries to the unprotected POST /query API endpoint bound to 0.0.0.0:7777 with wildcard CORS. Attackers can send unauthenticated HTTP requests that cause the autonomous agent to generate and execute shell commands through BashInterpreter using subprocess.Popen with shell=True and safety=False, bypassing the incomplete command blocklist to achieve full host-level code execution.

CVSS scores

Score	Version	Source	Vector
9.3Critical	4.0	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`
9.8Critical	3.1	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
Fosowl	agenticSeek	v < f1eb2cfc721f8a21dd16a8b048a9ca89f3259f6f	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/Fosowl/agenticSeek product
https://github.com/Fosowl/agenticSeek/pull/534/changes/f1eb2cfc721f8a21dd16a8b048a9ca89f3259f6f patch
https://www.vulncheck.com/advisories/agenticseek-unauthenticated-rce-via-query-api-endpoint third-party-advisory
https://github.com/Fosowl/agenticSeek/issues/520 issue-tracking

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Details

Published: 2026-08-14
Last updated: 2026-09-24
State: Published
Assigner (CNA): VulnCheck

Exploit prediction (EPSS)

1.1%

Probability of exploitation in 30 days

65.8%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-306
Missing Authentication for Critical Function