CVE-2026-28559Network attack vector

Unauthenticated topic disclosure via global RSS feed

Published Feb 28, 2026 · Updated Feb 28, 2026

Information disclosure in wpForo Forum before 2.4.16 allows remote attackers to read private and unapproved topics through its RSS feed. The global feed query omits privacy and approval-status WHERE clauses when the request lacks a forum ID parameter. No authentication or forum ID is required; the reported consequence is read-only exposure of restricted forum content.

CVSS severity6.9
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in wpForo Forum before 2.4.16 allows remote attackers to read private and unapproved topics through its RSS feed. The global feed query omits privacy and approval-status WHERE clauses when the request lacks a forum ID parameter. No authentication or forum ID is required; the reported consequence is read-only exposure of restricted forum content.

The record

CVE
CVE-2026-28559
Published
Feb 28, 2026
Updated
Feb 28, 2026
Vendor
AdvancedCoding
Product
wpForo Forum
Classifications
CWE-200, T1213
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 28, 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=2.4 <2.4.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

AdvancedCoding · wpForo Forumversion=2.4 <2.4.16

Published CVSS scores

6.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
5.3VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1213Data from Information Repositories

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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