CVE-2024-13537Network attack vector

Unauthenticated path disclosure via exposed Composer installer

Published Feb 21, 2025 · Updated Apr 8, 2026

Information disclosure in COVERT NINE C9 Blocks 1.7.7 and earlier allows remote attackers to read the WordPress installation path. The publicly reachable composer-setup.php script enables PHP error display, causing diagnostic output to expose the server-side web root. No authentication or user interaction is required, but the disclosed path has no direct impact without another flaw that can use it.

CVSS severity5.3
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in COVERT NINE C9 Blocks 1.7.7 and earlier allows remote attackers to read the WordPress installation path. The publicly reachable composer-setup.php script enables PHP error display, causing diagnostic output to expose the server-side web root. No authentication or user interaction is required, but the disclosed path has no direct impact without another flaw that can use it.

The record

CVE
CVE-2024-13537
Published
Feb 21, 2025
Updated
Apr 8, 2026
Vendor
COVERT NINE
Product
C9 Blocks
Classifications
CWE-209
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record 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=0 <=1.7.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

COVERT NINE · C9 Blocksversion=0 <=1.7.7

Published CVSS scores

5.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-209Generation of Error Message Containing Sensitive Information

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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