How severe is CVE-2026-28561?

CVE-2026-28561 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-28561 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28561?

CVE-2026-28561 affects Gvectors Wpforo Forum. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28561?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-28561 have an EU (EUVD) identifier?

Yes. CVE-2026-28561 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9110.

When was CVE-2026-28561 published?

CVE-2026-28561 was published on 2026-02-28 and last updated on 2026-06-17.

CVE-2026-28561

CVE-2026-28561 is a medium-severity vulnerability in Gvectors Wpforo Forum with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v4: 4.8
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9110
Weakness: CWE-79
Affected product: Gvectors Wpforo Forum
Published: 2026-02-28
Last modified: 2026-06-17

Description

wpForo Forum 2.4.14 contains a stored cross-site scripting vulnerability that allows administrators to inject persistent JavaScript via forum description fields echoed without output escaping across multiple theme template files. On multisite installations or with a compromised admin account, attackers set a forum description containing HTML event handlers that execute when any user views the forum listing.

Frequently asked questions

What is CVE-2026-28561?: wpForo Forum 2.4.14 contains a stored cross-site scripting vulnerability that allows administrators to inject persistent JavaScript via forum description fields echoed without output escaping across multiple theme template files. On multisite installations or with a compromised admin account, attackers set a forum description containing HTML event handlers that execute when any user views the forum listing.
How severe is CVE-2026-28561?: CVE-2026-28561 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-28561 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28561?: CVE-2026-28561 affects Gvectors Wpforo Forum. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28561?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-28561 have an EU (EUVD) identifier?: Yes. CVE-2026-28561 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9110.
When was CVE-2026-28561 published?: CVE-2026-28561 was published on 2026-02-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gvectors:wpforo_forum:*:*:*:*:*:wordpress:*:*

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