kitae-park Mang Board Plugin up to 2.3.7 on WordPress mbw_get_hash_key/mbw_validate_auth_cookie missing authentication

Summaryinfo

A vulnerability was found in kitae-park Mang Board Plugin up to 2.3.7. It has been classified as critical. Affected by this issue is the function mbw_get_hash_key/mbw_validate_auth_cookie. Performing a manipulation results in missing authentication. This vulnerability is known as CVE-2026-75977. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in kitae-park Mang Board Plugin up to 2.3.7. This affects the function mbw_get_hash_key/mbw_validate_auth_cookie. The manipulation with an unknown input leads to a missing authentication vulnerability. CWE is classifying the issue as CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Mang Board WP plugin for WordPress is vulnerable to Missing Authorization via Authentication Cookie Forgery in all versions up to, and including, 2.3.7. This is due to flawed HMAC generation in the mbw_get_hash_key() function that uses the current user's identity instead of the cookie username parameter when a WordPress user is logged in, combined with insufficient validation in mbw_validate_auth_cookie(). This makes it possible for authenticated attackers, with subscriber-level access and above, to forge administrator authentication cookies and change administrator passwords to achieve complete site takeover.

It is possible to read the advisory at wordfence.com. This vulnerability is uniquely identified as CVE-2026-75977 since 08/18/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/26/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• kitae-park

Name

• Mang Board Plugin

Version

• 2.3.0
• 2.3.1
• 2.3.2
• 2.3.3
• 2.3.4
• 2.3.5
• 2.3.6
• 2.3.7

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

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