CVE-2024-43407

MEDIUMNVD 6.16.1
EchelonGraph scoreLOW confidence

This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: nvd
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. A potential vulnerability has been discovered in CKEditor 4 Code Snippet GeSHi plugin. The vulnerability allowed a reflected XSS attack by exploiting a flaw in the GeSHi syntax highlighter library hosted by the victim. The GeSHi library was included as a vendor dependency in CKEditor 4 source files. In a specific scenario, an attacker could craft a malicious script that could be executed by sending a request to the GeSHi library hosted on a PHP web server. The GeSHi library is no longer actively maintained. Due to the lack of ongoing support and updates, potential security vulnerabilities have been identified with its continued use. To mitigate these risks and enhance the overall security of the CKEditor 4, we have decided to completely remove the GeSHi library as a dependency. This change aims to maintain a secure environment and reduce the risk of any security incidents related to outdated or unsupported software. The fix is be available in version 4.25.0-lts.

CVSS v3
6.1
EG Score
6.1(low)
EG Risk
—
EPSS
34.7%
KEV
Not listed

Published

August 21, 2024

Last Modified

August 23, 2024

References (3)

Affected Packages

(2 across 2 ecosystems)
npm(1)
PackageVulnerable rangeFixed inDependents
ckeditor4—4.25.0—
Packagist(1)
PackageVulnerable rangeFixed inDependents
ckeditor/ckeditor4.10.0 ... 4.9.2 (67 versions)4.25.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 43× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 14:07 UTCEPSS rescore
  2. 2026-07-21 15:23 UTCEPSS rescore
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  15. 2026-07-13 10:37 UTCOSV refresh
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  1. 2026-07-06 02:22 UTCEPSS rescore
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  14. 2026-06-25 03:31 UTCOSV refresh
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  40. 2026-06-10 13:21 UTCEPSS rescore
  41. 2026-06-08 14:16 UTCEPSS rescore
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  43. 2026-06-07 23:28 UTCOSV refresh
  44. 2026-06-07 15:24 UTCEPSS rescore
  45. 2026-06-07 15:24 UTCEPSS rescore
  46. 2026-06-06 13:46 UTCEPSS rescore
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  71. 2026-05-26 07:18 UTCEPSS rescore
  72. 2026-05-23 12:18 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2024-43407?
CVE-2024-43407 is a medium vulnerability published on August 21, 2024. CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. A potential vulnerability has been discovered in CKEditor 4 Code Snippet GeSHi plugin. The vulnerability allowed a reflected XSS attack by exploiting a flaw in the GeSHi syntax highlighter library hosted by the victim. The GeSHi…
When was CVE-2024-43407 disclosed?
CVE-2024-43407 was first published in the National Vulnerability Database on August 21, 2024, with the most recent update on August 23, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-43407 actively exploited?
CVE-2024-43407 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 34.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-43407?
CVE-2024-43407 has a CVSS v3 base score of 6.1 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2024-43407?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-43407, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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