CVE-2026-54072Public exploitNetwork attack vectorHinoki check available

OAuth token theft via unvalidated redirect URI

Published Sep 11, 2026 · Updated Sep 11, 2026

Open redirect in Authorizer before 2.2.1 allows remote attackers to steal OAuth tokens through a crafted authorization link. The /authorize handler appends access, ID, and refresh tokens to an unvalidated redirect_uri and returns a 302 response to that destination. Exploitation requires a logged-in user to open the link, after which the redirected tokens permit impersonation for their valid lifetimes.

CVSS severity9.3
Critical
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Open redirect in Authorizer before 2.2.1 allows remote attackers to steal OAuth tokens through a crafted authorization link. The /authorize handler appends access, ID, and refresh tokens to an unvalidated redirect_uri and returns a 302 response to that destination. Exploitation requires a logged-in user to open the link, after which the redirected tokens permit impersonation for their valid lifetimes.

The record

CVE
CVE-2026-54072
Published
Sep 11, 2026
Updated
Sep 11, 2026
Vendor
Authorizer
Product
Authorizer
Classifications
CWE-601, T1528
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 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=< 2.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Authorizer · Authorizerversion=< 2.2.1

Published CVSS scores

9.3GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A: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.

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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-601URL Redirection to Untrusted Site ('Open Redirect')
T1528Steal Application Access Token

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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