How severe is CVE-2025-5291?

CVE-2025-5291 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-2025-5291 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-5291?

CVE-2025-5291 affects Averta Master Slider. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-5291?

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

Does CVE-2025-5291 have an EU (EUVD) identifier?

Yes. CVE-2025-5291 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18489.

When was CVE-2025-5291 published?

CVE-2025-5291 was published on 2025-06-17 and last updated on 2026-06-17.

CVE-2025-5291

CVE-2025-5291 is a medium-severity vulnerability in Averta Master Slider 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)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18489
Weakness: CWE-79
Affected product: Averta Master Slider
Published: 2025-06-17
Last modified: 2026-06-17

Description

The Master Slider – Responsive Touch Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's masterslider_pb and ms_slide shortcodes in all versions up to, and including, 3.10.8 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Frequently asked questions

What is CVE-2025-5291?: The Master Slider – Responsive Touch Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's masterslider_pb and ms_slide shortcodes in all versions up to, and including, 3.10.8 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
How severe is CVE-2025-5291?: CVE-2025-5291 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-2025-5291 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-5291?: CVE-2025-5291 affects Averta Master Slider. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-5291?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-5291 have an EU (EUVD) identifier?: Yes. CVE-2025-5291 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18489.
When was CVE-2025-5291 published?: CVE-2025-5291 was published on 2025-06-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:averta:master_slider:*:*:*:*:*:wordpress:*:*

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