CVE-2024-13537: The C9 Blocks plugin for WordPress is vulnerable to Full Path Disclosure in all versions up to, and including,

Q: How do I fix CVE-2024-13537?

c9 blocks: upgrade to newer than 1.7.7. Exact commands for each OS are on this page.

Q: Is CVE-2024-13537 being exploited?

CVE-2024-13537 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-13537 affect?

CVE-2024-13537 affects c9 blocks. Severity is medium (CVSS 5.3). The C9 Blocks plugin for WordPress is vulnerable to Full Path Disclosure in all versions up to, and including, 1.7.7. This is due the plugin containing a publicly accessible composer-setup.php file with error display enabled. This makes it

Q: How urgent is CVE-2024-13537?

Priority 31/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2024-13537 is a medium-severity flaw (CVSS 5.3) affecting c9 blocks. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The C9 Blocks plugin for WordPress is vulnerable to Full Path Disclosure in all versions up to, and including, 1.7.7. This is due the plugin containing a publicly accessible composer-setup.php file with error display enabled. This makes it possible for unauthenticated attackers to retrieve the full path of the web application, which can be used to aid other attacks. The information displayed is not useful on its own, and requires another vulnerab

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 72%)
CISA exploited list	No
Weakness	CWE-209
Published	2025-02-21
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: covertnine

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-02-21 04:15 UTCPublished CVE record published
2026-06-17 07:02 UTCUpdated Record last modified

covertnine c9 blocks UPGRADE

Affected: <= 1.7.7

Fixed in: newer than 1.7.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy c9-blocks || rpm -q c9-blocks || c9-blocks --version

2. UPGRADE to newer than 1.7.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade c9-blocks

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade c9-blocks

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-13537?

c9 blocks: upgrade to newer than 1.7.7. Exact commands for each OS are on this page.

Is CVE-2024-13537 being exploited?

CVE-2024-13537 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-13537 affect?

CVE-2024-13537 affects c9 blocks. Severity is medium (CVSS 5.3). The C9 Blocks plugin for WordPress is vulnerable to Full Path Disclosure in all versions up to, and including, 1.7.7. This is due the plugin containing a publicly accessible composer-setup.php file with error display enabled. This makes it

How urgent is CVE-2024-13537?

Priority 31/100. Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities · PHP vulnerabilities

References

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