CVE-2026-8321Public exploitNetwork attack vector

Unauthenticated tenant impersonation via trusted request headers

Published May 11, 2026 · Updated May 11, 2026

Authentication bypass in Inkeep Agents 0.58.14 allows remote attackers to impersonate tenants via crafted HTTP headers. The runApiKeyAuthHandler middleware falls back to createDevContext without a valid API key, and that function copies unverified tenant, project, and agent headers into the execution context. Exploitation requires a development or test deployment reachable over the network and grants access under the selected tenant, project, and agent identities.

CVSS severity6.9
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Inkeep Agents 0.58.14 allows remote attackers to impersonate tenants via crafted HTTP headers. The runApiKeyAuthHandler middleware falls back to createDevContext without a valid API key, and that function copies unverified tenant, project, and agent headers into the execution context. Exploitation requires a development or test deployment reachable over the network and grants access under the selected tenant, project, and agent identities.

The record

CVE
CVE-2026-8321
Published
May 11, 2026
Updated
May 11, 2026
Vendor
Inkeep
Product
Inkeep Agents
Classifications
CWE-287, CWE-288, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 11, 2026CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.58.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Inkeep · Inkeep Agentsversion=0.58.14

Published CVSS scores

7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
6.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
CWE-288Authentication Bypass Using an Alternate Path or Channel
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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