How severe is CVE-2026-39665?

CVE-2026-39665 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-39665 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-39665?

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

Does CVE-2026-39665 have an EU (EUVD) identifier?

Yes. CVE-2026-39665 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20339.

When was CVE-2026-39665 published?

CVE-2026-39665 was published on 2026-04-08 and last updated on 2026-06-17.

CVE-2026-39665

CVE-2026-39665 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. 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 6.5)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-20339
Weakness: CWE-79
Published: 2026-04-08
Last modified: 2026-06-17

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Vladimir Prelovac SEO Friendly Images seo-image allows DOM-Based XSS.This issue affects SEO Friendly Images: from n/a through <= 3.0.5.

Frequently asked questions

What is CVE-2026-39665?: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Vladimir Prelovac SEO Friendly Images seo-image allows DOM-Based XSS.This issue affects SEO Friendly Images: from n/a through <= 3.0.5.
How severe is CVE-2026-39665?: CVE-2026-39665 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-39665 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-39665?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-39665 have an EU (EUVD) identifier?: Yes. CVE-2026-39665 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20339.
When was CVE-2026-39665 published?: CVE-2026-39665 was published on 2026-04-08 and last updated on 2026-06-17.

References

https://patchstack.com/database/Wordpress/Plugin/seo-image/vulnerability/wordpress-seo-friendly-images-plugin-3-0-5-cross-site-scripting-xss-vulnerability?_s_id=cve

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