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CVE-2026-54357— MISP improper authorization allows organization administrators to modify site administrator user settings

Quick assessment

Affected
misp misp
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MISP是MISP组织开源的一套开源的软件解决方案。 该产品用于收集、存储、分发、共享网络安全指标,并具有威胁网络安全事件分析和恶意软件分析等功能。 MISP 2.5.40之前版本存在授权问题漏洞，该漏洞源于授权不当，可能导致已认证的组织管理员访问或修改属于同一组织内站点管理员账户的用户设置。

AI Predicted 8.1 Difficulty: Easy EPSS 0.43% · P35

Possible ATT&CK Techniques 1 AI

T1078.003 · Local Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
misp misp < 2.5.40 affected
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I. Basic Information for CVE-2026-54357

Vulnerability Information
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Vulnerability Title
MISP improper authorization allows organization administrators to modify site administrator user settings
Source: CVE Program / CVE List V5
Vulnerability Description
An improper authorization vulnerability in MISP allowed an authenticated organization administrator to access or modify user settings belonging to site administrator accounts within the same organization. The affected access-control checks scoped administrative actions by organization membership but did not exclude higher-privileged site administrator users. As a result, an organization administrator could potentially view or alter site administrator user settings and related login profile information, crossing the intended privilege boundary between organization administration and site-wide administration. The patch hardens the ACL logic by excluding site administrator accounts from organization administrator–managed user sets, adding explicit authorization failure when a target user is not administrable, and ensuring user setting and login profile operations fail closed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
MISP 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MISP是MISP组织开源的一套开源的软件解决方案。 该产品用于收集、存储、分发、共享网络安全指标,并具有威胁网络安全事件分析和恶意软件分析等功能。 MISP 2.5.40之前版本存在授权问题漏洞，该漏洞源于授权不当，可能导致已认证的组织管理员访问或修改属于同一组织内站点管理员账户的用户设置。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
misp misp 0 ~ 2.5.40 -

II. Public POCs for CVE-2026-54357

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III. Intelligence Information for CVE-2026-54357

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Patches & Fixes for CVE-2026-54357 (1)

Same Patch Batch · misp · 2026-06-12 · 12 CVEs total

CVE-2026-54358 MISP organization administrators can target site administrator accounts for password reset
CVE-2026-54362 MISP template builder exposes non-visible custom galaxies across organisations
CVE-2026-54359 MISP automation endpoints may be exposed to CSRF when Sec-Fetch-Site protection is disable
CVE-2026-54398 MISP object edit authorization bypass allows unauthorized sharing group assignment
CVE-2026-54396 MISP AuthKey edit endpoint allows authenticated user email enumeration
CVE-2026-54394 MISP organisation logo path traversal allows retrieval of arbitrary PNG/SVG files
CVE-2026-54393 MISP Overmind theme stored XSS via unvalidated homepage setting
CVE-2026-54395 MISP UiBeta event index reflected XSS in advanced filter popup
CVE-2026-54397 MISP event editing allows unauthorized assignment to undisclosed sharing groups
CVE-2026-54360 MISP sharing group creation mass assignment allows unauthorized takeover of existing shari
CVE-2026-54361 MISP mass assignment vulnerabilities allow unauthorized modification of ownership and dele

IV. Related Vulnerabilities

Same product: misp
Same vendor: misp
Same weakness: CWE-863

V. Comments for CVE-2026-54357

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