CVE-2026-33954Public exploitNetwork attack vector

Authenticated private-note disclosure via unfiltered relationship rendering

Published Mar 27, 2026 · Updated Mar 27, 2026

Improper authorization in Kovah LinkAce before 2.5.3 allows remote authenticated users to read other users' private notes. The web link detail view renders the Link model's notes relationship directly instead of applying the visibleForUser() filter used by the API. Access requires an account and visibility of the parent internal or public link; disclosure is limited to private notes attached to that link.

CVSS severity6.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Kovah LinkAce before 2.5.3 allows remote authenticated users to read other users' private notes. The web link detail view renders the Link model's notes relationship directly instead of applying the visibleForUser() filter used by the API. Access requires an account and visibility of the parent internal or public link; disclosure is limited to private notes attached to that link.

The record

CVE
CVE-2026-33954
Published
Mar 27, 2026
Updated
Mar 27, 2026
Vendor
Kovah
Product
LinkAce
Classifications
CWE-285, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 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=< 2.5.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Kovah · LinkAceversion=< 2.5.3

Published CVSS scores

6.5GitHub, Inc.CVSS: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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-285Improper Authorization
T1213Data from Information Repositories

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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