CVE-2025-8521

Name: CVE-2025-8521
Creator: NVD / NIST
Published: 2025-08-04T19:15:33.043+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 1.9/10EPSS 0.28%

Last modified Jun 17, 2026

CVE-2025-8521 is a low-severity vulnerability rated 1.9/10 on the CVSS scale. 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. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS 4.0

1.9/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.28%

19.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Vvveb	Vvveb	< 1.0.6

References

https://github.com/givanz/Vvveb/commit/b53c7161da606f512b7efcb392d6ffc708688d49Patch
https://github.com/givanz/Vvveb/releases/tag/1.0.6Release Notes
https://hkohi.ca/vulnerability/11Exploit, Third Party Advisory
https://vuldb.com/?ctiid.318647Permissions Required, VDB Entry
https://vuldb.com/?id.318647Third Party Advisory, VDB Entry
https://vuldb.com/?submit.625003Third Party Advisory, VDB Entry
https://hkohi.ca/vulnerability/11Exploit, Third Party Advisory
https://vuldb.com/?submit.625003Third Party Advisory, VDB Entry

Timeline

Published: Aug 4, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-8521?

How severe is CVE-2025-8521?

CVE-2025-8521 has a CVSS score of 1.9/10 (LOW severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2025-8521?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-8521?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST