CVE-2026-97737Network attack vector

Pre-authentication account takeover via shared cache keys

Published Sep 25, 2026 · Updated Sep 25, 2026

Authentication bypass in Wakapi before 2.17.6 allows remote attackers to take over accounts through colliding user cache keys. GetUserById and GetUserByKey stored and read user objects under the same unprefixed identifier, so a user ID cached by one path could be accepted as an API key by the other. User caching must be enabled and the victim's ID must already be cached; successful exploitation grants access to the victim's account without credentials.

CVSS severity9.1
Critical
EPSS probability0.27%
Next 30 days · Oct 18, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Get started

Summary

What happened

Authentication bypass in Wakapi before 2.17.6 allows remote attackers to take over accounts through colliding user cache keys. GetUserById and GetUserByKey stored and read user objects under the same unprefixed identifier, so a user ID cached by one path could be accepted as an API key by the other. User caching must be enabled and the victim's ID must already be cached; successful exploitation grants access to the victim's account without credentials.

The record

CVE
CVE-2026-97737
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
Ferdinand Mütsch
Product
Wakapi
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <2.17.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ferdinand Mütsch · Wakapiversion=0 <2.17.6

Published CVSS scores

9.1GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Get started to see how Hinoki identifies affected software and validates exploitability in your environment.

Get started