Is CVE-2026-8080 actively exploited?

No active exploitation of CVE-2026-8080 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-8080 be exploited remotely?

Yes. CVE-2026-8080 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-8080?

CVE-2026-8080 has a CVSS score of 5.4 (MEDIUM).

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MEDIUM

CVE-2026-8080

CWE-79Published: May 7, 2026· Updated: May 11, 2026

5.4

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:14.3th

Official Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in misp allows Stored XSS.

This issue affects MISP before 2.5.37.

A stored cross-site scripting vulnerability exists in the template element attribute handling logic. The application accepted arbitrary values for the TemplateElementAttribute type and category fields without validating them against the known MISP attribute type and category definitions. An attacker with permission to create or modify template element attributes could store a crafted type value.

This affects the old templating (not more accessible in 2.5.37) engine from MISP which will be removed in 2.5.38

NVD Source

Technical Analysis

CVE-2026-8080 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.