CVE-2024-45400Network attack vector

Cross-site scripting via whitespace-obfuscated JavaScript URLs

Published Sep 5, 2024 · Updated Sep 6, 2024

Cross-site scripting in Marek Lewandowski Open Link before 1.0.7 allows remote attackers to execute JavaScript via crafted link content. The plugin.js URL check strips whitespace only from the start of href values before comparing them with disallowed protocols, allowing embedded whitespace to hide a JavaScript scheme. Execution requires a user to load attacker-prepared content and activate its link, after which the script runs in the browser context and can read or alter accessible page data.

CVSS severity6.1
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

Cross-site scripting in Marek Lewandowski Open Link before 1.0.7 allows remote attackers to execute JavaScript via crafted link content. The plugin.js URL check strips whitespace only from the start of href values before comparing them with disallowed protocols, allowing embedded whitespace to hide a JavaScript scheme. Execution requires a user to load attacker-prepared content and activate its link, after which the script runs in the browser context and can read or alter accessible page data.

The record

CVE
CVE-2024-45400
Published
Sep 5, 2024
Updated
Sep 6, 2024
Vendor
Marek Lewandowski
Product
Open Link
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 6, 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=< 1.0.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Marek Lewandowski · Open Linkversion=< 1.0.7

Published CVSS scores

6.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

Public exploit references

No public exploit references are available in this record.

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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