Multiples vulnérabilités dans MISP (14 septembre 2026)
De multiples vulnérabilités ont été découvertes dans MISP. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service à distance, une atteinte à la confidentialité des données et une atteinte à l'intégrité des données.
Details
Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1170/
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-852390.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 17% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-852370.27% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-864170.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-852160.50% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 41% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-864400.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-852300.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-852380.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 12% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-864180.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-852210.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-864520.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all EPSS-scored CVEs.
Referenced CVEs
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- medium[NEU] [mittel] MISP: Mehrere Schwachstellencert-bund
- highCVE-2026-86452: Affected versions of MISP permit unauthenticated or weakly constrained request paths to perfor…nvd
- mediumCVE-2026-86441: Affected versions of MISP contain inconsistent authorization checks across dashboard widgets t…nvd
- mediumCVE-2026-86440: Affected versions of MISP insufficiently validate URLs used by dashboard widgets, particularly…nvd
- criticalCVE-2026-86419: Affected versions of MISP contain insufficient validation of server-side outbound HTTP destina…nvd
- mediumCVE-2026-86418: Affected versions of MISP expose organisation metadata through the dashboard organisation pick…nvd
- mediumCVE-2026-86417: Affected versions of MISP inconsistently enforced email-address visibility in DashboardsContro…nvd
- mediumCVE-2026-86408: Affected versions of MISP do not enforce parent-event visibility when serving cryptographic ke…nvd
- mediumCVE-2026-86351: Affected versions of MISP validate the user-configurable homepage by checking only whether the…nvd
- mediumCVE-2026-86347: Affected versions of MISP allow any authenticated user to access TemplatesController::uploadFi…nvd
- mediumCVE-2026-86342: Affected versions of MISP contain improper authorization checks in the freetext feed preview f…nvd
- high[UPDATE] [hoch] MISP: Mehrere Schwachstellencert-bund
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