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CVE-2026-89307

MEDIUMCVSS 5.1/10EPSS 0.28%

Last modified

CVE-2026-89307 is a medium-severity vulnerability rated 5.1/10 on the CVSS scale. The "Firma Circolare" feature in the "Design Scuole Italia" WordPress theme allows an authenticated attacker to inject arbitrary HTML via the sign parameter, enabling forced redirection of visiting users to an attacker-controlled URL (Stored HTML Injection / Open Redirect).. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

The "Firma Circolare" feature in the "Design Scuole Italia" WordPress theme allows an authenticated attacker to inject arbitrary HTML via the sign parameter, enabling forced redirection of visiting users to an attacker-controlled URL (Stored HTML Injection / Open Redirect).

Metrics

CVSS 4.0
5.1/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/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%

20.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Developers Italiadesign-scuole-wordpress-theme>= 1.0, <= 2.17.3

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2026-89307?
The "Firma Circolare" feature in the "Design Scuole Italia" WordPress theme allows an authenticated attacker to inject arbitrary HTML via the sign parameter, enabling forced redirection of visiting users to an attacker-controlled URL (Stored HTML Injection / Open Redirect).
How severe is CVE-2026-89307?
CVE-2026-89307 has a CVSS score of 5.1/10 (MEDIUM severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.
How do I fix CVE-2026-89307?
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.

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Source: NVD / NIST