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Fencer Intel
critical 9.8

CVE-2026-51867 json

agentgpt v.1.0.0 is vulnerable to Incorrect Access Control in next/src/server/api/routers/agentRouter.ts.

published last mo. modified last mo. also EUVD-2026-90415

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits
0
none known

Summary

agentgpt v.1.0.0 is vulnerable to Incorrect Access Control in next/src/server/api/routers/agentRouter.ts. An externally reachable path accepts a caller-selected object or tenant identifier and reaches a data-access operation without a visible owner, tenant, workspace, or membership binding on that object.

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CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
last mo.

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • gist.github.com https://gist.github.com/Ro1ME/62547f81c244f273b66755dad63a8673 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.