How severe is CVE-2025-8521?

CVE-2025-8521 has a CVSS 3.x base score of 2.4, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2025-8521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-8521?

CVE-2025-8521 affects Vvveb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-8521?

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

Does CVE-2025-8521 have an EU (EUVD) identifier?

Yes. CVE-2025-8521 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23531.

When was CVE-2025-8521 published?

CVE-2025-8521 was published on 2025-08-04 and last updated on 2026-06-17.

CVE-2025-8521

CVE-2025-8521 is a low-severity vulnerability in Vvveb with a CVSS 3.x base score of 2.4. 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: Low (CVSS 3.x base score 2.4)
CVSS v2: 3.3
CVSS v4: 1.9
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-23531
Weakness: CWE-79
Affected product: Vvveb
Published: 2025-08-04
Last modified: 2026-06-17

Description

A vulnerability, which was classified as problematic, has been found in givanz Vvveb up to 1.0.5. This issue affects some unknown processing of the file /vadmin123/index.php?module=settings/post-types of the component Add Type Handler. The manipulation leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.0.6 is able to address this issue. The patch is named b53c7161da606f512b7efcb392d6ffc708688d49/605a70f8729e4d44ebe272671cb1e43e3d6ae014. It is recommended to upgrade the affected component.

Frequently asked questions

What is CVE-2025-8521?: A vulnerability, which was classified as problematic, has been found in givanz Vvveb up to 1.0.5. This issue affects some unknown processing of the file /vadmin123/index.php?module=settings/post-types of the component Add Type Handler. The manipulation leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.0.6 is able to address this issue. The patch is named b53c7161da606f512b7efcb392d6ffc708688d49/605a70f8729e4d44ebe272671cb1e43e3d6ae014. It is recommended to upgrade the affected component.
How severe is CVE-2025-8521?: CVE-2025-8521 has a CVSS 3.x base score of 2.4, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2025-8521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-8521?: CVE-2025-8521 affects Vvveb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-8521?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-8521 have an EU (EUVD) identifier?: Yes. CVE-2025-8521 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23531.
When was CVE-2025-8521 published?: CVE-2025-8521 was published on 2025-08-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:vvveb:vvveb:*:*:*:*:*:*:*:*

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