CVE-2026-8080

mediumpriority · track · 32EPSS 0.001 · 3 %ileexploit · PoCDEEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

0.14% (3rd) EPSS

CVSS 5.4 · medium

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

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

cvss

Technical severity, 0–10. One row per scoring source.

6.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.3 · impact 2.7

v4.06.8mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/U:Greensecondary · ENISA EU

v4.06.8mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/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:Greensecondary

v4.05.4mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/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:Greensecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79US

exploits (1)

Public proof-of-concept and weaponised exploit code.

George0Papasotiriou/CVE-2026-8080-DKIM-Signature-Verification-Bypass-Header-Canonicalization-Flaw-George0Papasotiriou/CVE-2026-8080-DKIM-Signature-Verification-Bypass-Header-Canonicalization-Flaw-PoC · poc_in_github

affected products (4)

Products and version ranges known to be affected.

Open Source MISP <2.5.37all versionscert_bundDE
Open Source MISP< 2.5.37cert_bundDE
MISP MISP0 → 2.5.37enisa_euvdEU
misp-project misp< 2.5.37nvdUScpe:2.3:a:misp-project:misp:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1424MISP: Schwachstelle ermöglicht Cross-Site ScriptingDeutsch2026-05-07csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in MISP ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2026-05-07modified 2026-06-22

references (4)

External citations — patches, advisories, analysis.

scry

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