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CVE Record

CVE-2024-13537: C9 Blocks <= 1.7.7 - Unauthenticated Full Path Disclosure

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 vulnerability to be present for damage to an affected website.

MediumCVSS 5.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2024-13537 exposes the server filesystem path of WordPress sites using C9 Blocks through version 1.7.7. By itself, this does not compromise the site, but it can help attackers make other vulnerabilities more effective.

Executive priority

Treat this as a medium-priority hygiene issue. It should be remediated during normal patching, faster if the site also has known WordPress, plugin, upload, or file inclusion risks.

Technical view

C9 Blocks contains a publicly accessible composer-setup.php file with error display enabled. Unauthenticated remote users can trigger full path disclosure. The issue maps to CWE-209 and has CVSS 3.1 score 5.3 with low confidentiality impact only.

Likely exposure

Exposure is likely limited to internet-facing WordPress sites that have the C9 Blocks plugin installed at version 1.7.7 or earlier.

Exploitation context

The supplied sources do not show active exploitation, and the CVE is not listed as KEV. The disclosed path is not useful alone, but may support chaining with another flaw.

Researcher notes

The CVE data identifies full path disclosure only. Do not assume code execution, authentication bypass, or data theft from this issue alone. Evidence for a fixed version is not included in the supplied bundle.

Mitigation direction

  • Inventory WordPress sites for C9 Blocks version 1.7.7 or earlier.
  • Check vendor or WordPress plugin guidance for a fixed release.
  • If no fix is available, disable or remove the plugin after change control.
  • Restrict public access to unnecessary setup files where operationally safe.
  • Ensure production PHP does not display filesystem paths in errors.

Validation and detection

  • Confirm whether C9 Blocks is installed on each WordPress site.
  • Record installed plugin versions and compare against 1.7.7.
  • Review web logs for unauthenticated requests to setup-related plugin files.
  • Verify production error handling does not disclose local filesystem paths.
  • Document any compensating controls for affected sites.
Prepared
Confidence
high
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-209: Information exposure and cloud metadata lookup

Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2024-13537 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N3.91.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.3Medium
CVSS 3.1 vector shape for CVE-2024-13537Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
ttoomeyC9 Blocks0unaffected
Weakness

CWE details

CWE-209

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-209 · source CWE mapping

Generation of Error Message Containing Sensitive Information

Generation of Error Message Containing Sensitive Information represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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