CVE-2026-67345Public exploitNetwork attack vectorHinoki check available

OAuth authorization code theft via suffix-matched redirects

Published Jul 30, 2026 · Updated Jul 30, 2026

Redirect URI validation in Dromara MaxKey 4.1.12 and earlier allows remote attackers to steal OAuth 2.0 authorization codes. DefaultRedirectResolver.hostMatches() accepts a requested hostname whenever it ends with the registered hostname, without requiring equality or a dot boundary. Exploitation requires control of a suffix-matching domain and victim interaction with a crafted authorization URL; the stolen code can be exchanged for an access token to the victim's connected account.

CVSS severity8.5
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Redirect URI validation in Dromara MaxKey 4.1.12 and earlier allows remote attackers to steal OAuth 2.0 authorization codes. DefaultRedirectResolver.hostMatches() accepts a requested hostname whenever it ends with the registered hostname, without requiring equality or a dot boundary. Exploitation requires control of a suffix-matching domain and victim interaction with a crafted authorization URL; the stolen code can be exchanged for an access token to the victim's connected account.

The record

CVE
CVE-2026-67345
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
Dromara
Product
MaxKey
Classifications
CWE-183, T1528, T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 30, 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 <=4.1.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Dromara · MaxKeyversion=0 <=4.1.12

Published CVSS scores

8.5VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/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-183Permissive List of Allowed Inputs
T1528Steal Application Access Token
T1566.002Spearphishing Link

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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