Is CVE-2026-45343 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-45343 being exploited in the wild.

How severe is CVE-2026-45343?

Informational severity, with a CVSS score of 8.5, published 28 May 2026.

Is there a fix for CVE-2026-45343?

A patch was published on 2026-05-28: Vulnerability fixed in version 2.5.6 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-45343 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-45343?

Check whether you run Kovah LinkAce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-45343: Kovah LinkAce stored XSS in audit log via SSO display name

CVE-2026-45343 · Severity: info · CVSS 8.5 · Published 2026-05-28

LinkAce, a self-hosted bookmark and link management tool, is vulnerable to a security flaw that allows a standard user to take control of an administrator's account. By using a specially crafted name during the login process, an attacker can plant a hidden script that triggers when an administrator views the system's activity logs. This could lead to the theft of administrative session data, unauthorized access to sensitive information, or full control over the LinkAce installation.

Technologies: Kovah LinkAce. Vendors: Kovah.

Quick answers

Is CVE-2026-45343 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-45343 being exploited in the wild.
How severe is CVE-2026-45343?: Informational severity, with a CVSS score of 8.5, published 28 May 2026.
Which products and versions are affected?: Kovah LinkAce < 2.5.6.
Is there a fix for CVE-2026-45343?: A patch was published on 2026-05-28: Vulnerability fixed in version 2.5.6 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-45343 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-45343?: Check whether you run Kovah LinkAce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stored cross-site scripting (XSS) vulnerability exists in LinkAce versions prior to 2.5.6 due to improper sanitization of OAuth/SSO display names. When a user authenticates via SSO, the SocialiteController stores the provider's display name directly into the database without validation. When this user performs an action that generates an audit log entry, the ActivityEntry component interpolates the unsanitized name into a translation string, which is then rendered as raw HTML using the {!! $change !!} blade syntax. An attacker can exploit this by setting their OAuth display name to a malicious script, which executes in the context of any administrator visiting the /system/audit page. This can result in session hijacking, CSRF token exfiltration, and unauthorized administrative actions. The issue is resolved in version 2.5.6 by applying proper escaping to the causer name.

Affected products

Kovah LinkAce < 2.5.6

Timeline

2026-05-10: advisory: Vendor advisory published on GitHub
2026-05-28: disclosed: CVE published to NVD
2026-05-28: patched: Vulnerability fixed in version 2.5.6

References

https://github.com/Kovah/LinkAce/security/advisories/GHSA-jx4g-ph82-x9mm

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