Is CVE-2024-23336 in the CISA KEV catalog?

No. CVE-2024-23336 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-23336?

CVE-2024-23336 has a CVSS v3 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2024-23336?

CVE-2024-23336 has an EPSS score of 0.46% (36th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-23336?

Upgrade mybb to 1.8.38 or later.

CVE & CISA-KEV Catalog

CVE-2024-23336

MEDIUM

5.0

CVSS v3

NVD

Description

MyBB is a free and open source forum software. The default list of disallowed remote hosts does not contain the `127.0.0.0/8` block, which may result in a Server-Side Request Forgery (SSRF) vulnerability. The Configuration File's _Disallowed Remote Addresses_ list (`$config['disallowed_remote_addresses']`) contains the address `127.0.0.1`, but does not include the complete block `127.0.0.0/8`. MyBB 1.8.38 resolves this issue in default installations. Administrators of installed boards should update the existing configuration (`inc/config.php`) to include all addresses blocked by default. Additionally, users are advised to verify that it includes any other IPv4 addresses resolving to the server and other internal resources. Users unable to upgrade may manually add 127.0.0.0/8' to their disallowed address list.

CWE-184 CWE-918Server-Side Request Forgery (SSRF)

How to fix

Remediation Available

mybbNVD

Affected:< 1.8.38Fixed in:1.8.38CVE-2024-23336derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

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

Exploit Intelligence

0.46%probability of exploitation in 30 days

36thpercentile

Low risk: more likely to be exploited than 36% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

github.com

Release Notes1

mybb.com

Product1

docs.mybb.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-06-30.