How severe is CVE-2026-28558?

CVE-2026-28558 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-28558 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28558?

CVE-2026-28558 affects Gvectors Wpforo Forum. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28558?

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

Does CVE-2026-28558 have an EU (EUVD) identifier?

Yes. CVE-2026-28558 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9107.

When was CVE-2026-28558 published?

CVE-2026-28558 was published on 2026-02-28 and last updated on 2026-06-17.

CVE-2026-28558

CVE-2026-28558 is a medium-severity vulnerability in Gvectors Wpforo Forum with a CVSS 3.x base score of 6.4. 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 6.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9107
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 authenticated subscribers to upload SVG files as profile avatars through the avatar upload functionality. Attackers upload a crafted SVG containing CSS injection or JavaScript event handlers that execute in the browsers of any user who views the attacker's profile page.

Frequently asked questions

What is CVE-2026-28558?: wpForo Forum 2.4.14 contains a stored cross-site scripting vulnerability that allows authenticated subscribers to upload SVG files as profile avatars through the avatar upload functionality. Attackers upload a crafted SVG containing CSS injection or JavaScript event handlers that execute in the browsers of any user who views the attacker's profile page.
How severe is CVE-2026-28558?: CVE-2026-28558 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-28558 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28558?: CVE-2026-28558 affects Gvectors Wpforo Forum. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28558?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-28558 have an EU (EUVD) identifier?: Yes. CVE-2026-28558 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9107.
When was CVE-2026-28558 published?: CVE-2026-28558 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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