CVE-2026-8080: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in m

Q: How do I fix CVE-2026-8080?

misp: upgrade to 2.5.37. Exact commands for each OS are on this page.

Q: Is CVE-2026-8080 being exploited?

CVE-2026-8080 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-8080 affect?

CVE-2026-8080 affects misp. Severity is medium (CVSS 5.4). 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

Q: How urgent is CVE-2026-8080?

Priority 20/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2026-8080 is a medium-severity flaw (CVSS 5.4) affecting misp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 c

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-05-07
Last modified	2026-06-22

Publisher (CNA): CIRCL · Vendor: misp-project

Last updated 2026-06-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-07 12:16 UTCPublished CVE record published
2026-06-22 19:23 UTCUpdated Record last modified

misp-project misp UPGRADE

Affected: < 2.5.37

Fixed in: 2.5.37

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy misp || rpm -q misp || misp --version

2. UPGRADE to 2.5.37 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade misp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade misp

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-8080?

misp: upgrade to 2.5.37. Exact commands for each OS are on this page.

Is CVE-2026-8080 being exploited?

CVE-2026-8080 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-8080 affect?

CVE-2026-8080 affects misp. Severity is medium (CVSS 5.4). 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

How urgent is CVE-2026-8080?

Priority 20/100. No elevated risk signals yet.

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References

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