CVE-2024-56507Public exploitNetwork attack vector

Browser script execution via unchecked link URLs

Published Dec 27, 2024 · Updated Dec 27, 2024

Reflected XSS in Kovah LinkAce before 1.15.6 allows remote authenticated users to execute JavaScript when a victim opens a crafted link. LinkStoreRequest and LinkUpdateRequest accepted the URL field as an arbitrary string, permitting a javascript scheme to reach a rendered link without URL validation. Exploitation requires permission to create or edit a link and a victim to click it; script execution occurs in the victim's browser context and can expose session data or perform actions as that victim.

CVSS severity4.6
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Kovah LinkAce before 1.15.6 allows remote authenticated users to execute JavaScript when a victim opens a crafted link. LinkStoreRequest and LinkUpdateRequest accepted the URL field as an arbitrary string, permitting a javascript scheme to reach a rendered link without URL validation. Exploitation requires permission to create or edit a link and a victim to click it; script execution occurs in the victim's browser context and can expose session data or perform actions as that victim.

The record

CVE
CVE-2024-56507
Published
Dec 27, 2024
Updated
Dec 27, 2024
Vendor
Kovah
Product
LinkAce
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 27, 2024Record 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=< 1.15.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Kovah · LinkAceversion=< 1.15.6

Published CVSS scores

4.6GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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