CVE-2026-52893Public exploitNetwork attack vector

Unauthenticated account takeover via unchecked OIDC merge

Published Jul 15, 2026 · Updated Jul 15, 2026

Authentication bypass in WeKan before 9.32 allows remote attackers to take over existing accounts through an OIDC login. The Accounts.onCreateUser hook matches attacker-controlled OIDC email or username claims to an existing user and merges the OIDC credentials without proving ownership or checking email_verified. OIDC must be enabled and a matching claim supplied; successful exploitation exposes the victim's boards, attachments, API tokens, and inherited privileges.

CVSS severity9.2
Critical
EPSS probability0.48%
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 WeKan before 9.32 allows remote attackers to take over existing accounts through an OIDC login. The Accounts.onCreateUser hook matches attacker-controlled OIDC email or username claims to an existing user and merges the OIDC credentials without proving ownership or checking email_verified. OIDC must be enabled and a matching claim supplied; successful exploitation exposes the victim's boards, attachments, API tokens, and inherited privileges.

The record

CVE
CVE-2026-52893
Published
Jul 15, 2026
Updated
Jul 15, 2026
Vendor
WeKan
Product
WeKan
Classifications
CWE-287, T1098
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 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=< 9.32

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WeKan · WeKanversion=< 9.32

Published CVSS scores

9.2GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1098Account Manipulation

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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