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CVE-2026-86417

🔶 medium
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Summary

Affected versions of MISP inconsistently enforced email-address visibility in DashboardsController::listTemplates(). The query always fetched User.email, while redaction happened only inside the non-REST rendering branch. As a result, the same authenticated user who saw redacted data in the normal HTML interface could request the REST/JSON representation and receive template owners’ email addresses without the intended privilege check. The fix moves the decision to a centralized User::canSee

Description

Affected versions of MISP inconsistently enforced email-address visibility in DashboardsController::listTemplates().


The query always fetched User.email, while redaction happened only inside the non-REST rendering branch. As a result, the same authenticated user who saw redacted data in the normal HTML interface could request the REST/JSON representation and receive template owners’ email addresses without the intended privilege check.


The fix moves the decision to a centralized User::canSeeEmails() authorization helper. Email addresses are now fetched only when the requester is a site administrator or the instance explicitly enables Security.disclose_user_emails. The same helper is also reused by other dashboard widgets to keep email-disclosure policy consistent.

Version affected: ≤2.5.45

CVSS Score
4.3
Medium
EPSS Score
0.2
Exploit Probability
Published Date
2026-09-07
First Seen: 2026-09-08
📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 5.3% of all 360,673 vulnerabilities in our database.

#341,411
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Sep 8, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
🏆 Discovered By
Scottish Government - National Cyber Team iglocska (remediation developer) Claude Opus 5 (1M context) (remediation developer)
SSVC data provided by CISA
Last Modified 2026-09-09
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS Vector 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/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:X
CWE IDs (Weakness Types)
CWE-200 CWE-862

📦 Affected Products 1

Vendor Product Status Affected Versions
misp-project misp Affected
< 2.5.45

🔗 References 1

https://github.com/MISP/MISP/commit/fd554c3bd.patch
Patch

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-86342 🔶 medium 4.3 0.2 Affected versions of MISP contain improper authorization checks in the freetext feed preview functionality. The preview ... 2026-09-07
CVE-2026-86347 🔶 medium 6.5 0.3 Affected versions of MISP allow any authenticated user to access TemplatesController::uploadFile() because the ACL entry... 2026-09-07
CVE-2026-86351 🔶 medium 6.1 0.2 Affected versions of MISP validate the user-configurable homepage by checking only whether the supplied path begins with... 2026-09-07
CVE-2026-86408 🔶 medium 6.5 0.2 Affected versions of MISP do not enforce parent-event visibility when serving cryptographic keys through CryptographicKe... 2026-09-07
CVE-2026-86418 🔶 medium 4.3 0.2 Affected versions of MISP expose organisation metadata through the dashboard organisation picker without applying the sa... 2026-09-07
CVE-2026-86419 ⛔ critical 9.1 0.2 Affected versions of MISP contain insufficient validation of server-side outbound HTTP destinations in feed retrieval an... 2026-09-07
These CVEs affect the same products