How severe is CVE-2026-8080?

CVE-2026-8080 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-8080 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8080?

CVE-2026-8080 affects Misp-project Misp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8080?

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

Does CVE-2026-8080 have an EU (EUVD) identifier?

Yes. CVE-2026-8080 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28357.

When was CVE-2026-8080 published?

CVE-2026-8080 was published on 2026-05-07 and last updated on 2026-06-22.

CVE-2026-8080

CVE-2026-8080 is a medium-severity vulnerability in Misp-project Misp with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v4: 6.8
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28357
Weakness: CWE-79
Affected product: Misp-project Misp
Published: 2026-05-07
Last modified: 2026-06-22

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

Frequently asked questions

What is CVE-2026-8080?: 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
How severe is CVE-2026-8080?: CVE-2026-8080 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-8080 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8080?: CVE-2026-8080 affects Misp-project Misp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8080?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-8080 have an EU (EUVD) identifier?: Yes. CVE-2026-8080 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28357.
When was CVE-2026-8080 published?: CVE-2026-8080 was published on 2026-05-07 and last updated on 2026-06-22.

References

https://github.com/MISP/MISP/commit/62824e5ca0056d01b195f70466ea0d382cca06d0

Affected products (1)

cpe:2.3:a:misp-project:misp:*:*:*:*:*:*:*:*

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