CVE-2026-28559

Name: CVE-2026-28559
Creator: NVD / NIST
Published: 2026-02-28T22:16:02.933+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.9/10EPSS 0.34%

Last modified Jun 17, 2026

CVE-2026-28559 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. wpForo Forum 2.4.14 contains an information disclosure vulnerability that allows unauthenticated users to retrieve private and unapproved forum topics via the global RSS feed endpoint. Attackers request the RSS feed without a forum ID parameter, bypassing the privacy and status WHERE clauses that are only applied when a specific forum ID is present in the query.. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

Description

wpForo Forum 2.4.14 contains an information disclosure vulnerability that allows unauthenticated users to retrieve private and unapproved forum topics via the global RSS feed endpoint. Attackers request the RSS feed without a forum ID parameter, bypassing the privacy and status WHERE clauses that are only applied when a specific forum ID is present in the query.

Metrics

CVSS 3.1

5.3/10

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

CVSS 4.0

6.9/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.34%

25.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Gvectors	Wpforo Forum	>= 2.4.0, < 2.4.16

References

https://wordpress.org/plugins/wpforo/Product
https://wordpress.org/plugins/wpforo/#developersRelease Notes
https://www.vulncheck.com/advisories/wpforo-forum-information-disclosure-via-global-rss-feedThird Party Advisory

Timeline

Published: Feb 28, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-28559?

How severe is CVE-2026-28559?

CVE-2026-28559 has a CVSS score of 6.9/10 (MEDIUM severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.

How do I fix CVE-2026-28559?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-28559?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST