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Vulnerability record · CVE-2026-72776 · published 13 August 2026

CVE-2026-72776: Missing authentication for critical function vulnerability

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.

9.3 CVSS 4.0 Critical EPSS 1.1% · top 35.7% CWE-306 · Missing authentication for critical function Deferred
9.3CVSS 4.0 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
24 Sep 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/Fosowl/agenticSeek
https://github.com/Fosowl/agenticSeek/issues/520
https://github.com/Fosowl/agenticSeek/pull/534/changes/f1eb2cfc721f8a21dd16a8b048a9ca89f3259f6f
https://www.vulncheck.com/advisories/agenticseek-unauthenticated-rce-via-query-api-endpoint
https://github.com/Fosowl/agenticSeek/issues/520

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Source: NIST National Vulnerability Database (record CVE-2026-72776), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.