CVE-2025-53838: high-severity vulnerability in Kovah LinkAce
LinkAce has a Stored One Click XSS vulnerability
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.4epss 0.3%
LinkAce is a self-hosted archive to collect website links. A stored cross-site scripting (XSS) vulnerability was discovered in versions prior to 2.1.9 that allows an attacker to inject arbitrary JavaScript, which is then executed in the context of a user's browser when the malicious link is clicked. This is a one-click XSS, meaning the victim only needs to click a crafted link — no further interaction is required. The application contains a stored XSS vulnerability due to insufficient filtering and escaping of user-supplied data inserted into link attributes. Malicious JavaScript code can be saved in the database along with the link and executed in the user’s browser when clicking the link, leading to arbitrary script execution within the context of the site. Version 2.1.9 fixes the issue.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
Kovah · LinkAceRelated CVEs — Kovah LinkAce
In the same product, most dangerous first.
CVE-2026-45344HIGHLinkAce: Setup database password newline injection enables pre-auth RCE on uninitialized instancesEPSS 0.5%CVE-2024-56508HIGHFile Upload Vulnerability Leading to XSS in LinkAce v1.15.5EPSS 0.4%CVE-2025-62720HIGHLinkAce: Data Exfiltration via Export Functions Allow Access to All Users' Private LinksEPSS 0.4%CVE-2025-62721HIGHLinkAce: Authorization Bypass Allows Unauthorized Access to All Private Links, Lists, and TagsEPSS 0.4%CVE-2026-49436HIGHLinkAce vulnerable to stored XSS via 'javascript:' URI in Bulk Link APIEPSS 0.4%CVE-2025-59424HIGHLinkAce Vulnerable to Stored XSS on the Audit PageEPSS 0.4%