CVE-2026-75977Network attack vector

Subscriber-to-Administrator escalation via mismatched HMAC identity

Published Aug 26, 2026 · Updated Aug 26, 2026

Missing authorization in Mang Board WP 2.3.7 and earlier allows remote authenticated users to forge administrator cookies. mbw_get_hash_key() derives an HMAC from the current user's identity rather than the cookie username, while mbw_validate_auth_cookie() accepts the mismatch. Subscriber-level access is sufficient to change an administrator password and take over the WordPress site.

CVSS severity8.8
High
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Mang Board WP 2.3.7 and earlier allows remote authenticated users to forge administrator cookies. mbw_get_hash_key() derives an HMAC from the current user's identity rather than the cookie username, while mbw_validate_auth_cookie() accepts the mismatch. Subscriber-level access is sufficient to change an administrator password and take over the WordPress site.

The record

CVE
CVE-2026-75977
Published
Aug 26, 2026
Updated
Aug 26, 2026
Vendor
Kitae Park
Product
Mang Board WP
Classifications
CWE-269, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 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 <=2.3.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Kitae Park · Mang Board WPversion=0 <=2.3.7

Published CVSS scores

8.8GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1068Exploitation for Privilege Escalation

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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