CVE-2026-33398Public exploitNetwork attack vector

Authenticated hidden-post disclosure via missing ACL checks

Published Jun 2, 2026 · Updated Jun 2, 2026

Improper authorization in the Forum module in NamelessMC Nameless 2.2.4 allows remote authenticated users to read restricted posts. The get_quotes.php handler accepts an attacker-controlled post ID after checking only for a logged-in session, while Forum.php returns the post without enforcing forum or topic ACLs. Any low-privileged member can enumerate post IDs and disclose hidden, private, or staff-only forum content that the normal topic page denies.

CVSS severity7.1
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in the Forum module in NamelessMC Nameless 2.2.4 allows remote authenticated users to read restricted posts. The get_quotes.php handler accepts an attacker-controlled post ID after checking only for a logged-in session, while Forum.php returns the post without enforcing forum or topic ACLs. Any low-privileged member can enumerate post IDs and disclose hidden, private, or staff-only forum content that the normal topic page denies.

The record

CVE
CVE-2026-33398
Published
Jun 2, 2026
Updated
Jun 2, 2026
Vendor
NamelessMC
Product
Nameless
Classifications
CWE-285, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 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== 2.2.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NamelessMC · Namelessversion== 2.2.4

Published CVSS scores

7.1GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitPublished

Weakness, pattern, technique

CWE-285Improper Authorization
T1213Data from Information Repositories

Public exploit references

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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