CVE-2026-30847Network attack vector

Credential disclosure via unfiltered notificationUsers publication

Published Mar 6, 2026 · Updated Mar 6, 2026

Sensitive-data exposure in WeKan 8.31.0 through 8.33 allows remote authenticated users to obtain other users' credentials. The notificationUsers publication passes an empty field-selection object to ReactiveCache.getUsers(), returning complete user documents instead of only display fields. Any authenticated account can subscribe and receive bcrypt hashes, login and verification tokens, email addresses, and stored OAuth tokens, enabling offline cracking and session hijacking.

CVSS severity6.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive-data exposure in WeKan 8.31.0 through 8.33 allows remote authenticated users to obtain other users' credentials. The notificationUsers publication passes an empty field-selection object to ReactiveCache.getUsers(), returning complete user documents instead of only display fields. Any authenticated account can subscribe and receive bcrypt hashes, login and verification tokens, email addresses, and stored OAuth tokens, enabling offline cracking and session hijacking.

The record

CVE
CVE-2026-30847
Published
Mar 6, 2026
Updated
Mar 6, 2026
Vendor
WeKan
Product
WeKan
Classifications
CWE-200, CWE-285, T1539
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 6, 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=>= 8.31.0, < 8.34

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WeKan · WeKanversion=>= 8.31.0, < 8.34

Published CVSS scores

9.3GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:H/SA:H
6.5NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-285Improper Authorization
T1539Steal Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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