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CVE-2026-90955— MISP CLI Shell Audit Logs Lose User Identity and CLI Marker After First Lazy Model Load

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 受影响的交互式 CLI Shell 版本在审计日志中无法可靠地保留被模拟的 MISP 用户身份。 该 Shell 设计为以指定的 MISP 用户 ID 执行操作。然而，旧版 SysLogLogable 行为将用户身份存储在行为实例状态中，当其他模型懒加载挂载共享行为时，该身份可能会被覆盖。因此，后续的 CLI 写入操作可能会丢失预期的用户归属信息，并导致日志记录错误。此外，提交说明还指出，源自 CLI 的记录缺少 CLI 标记，使得这些记录在日志中看起来与普通 Web 操作无异。 受影响版本：≤ 2.5.

CVSS 4.6 · Medium
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I. Basic Information for CVE-2026-90955

Vulnerability Information
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Vulnerability Title
MISP CLI Shell Audit Logs Lose User Identity and CLI Marker After First Lazy Model Load
Source: CVE Program / CVE List V5
Vulnerability Description
Affected versions of MISP’s interactive CLI shell do not reliably preserve the identity of the impersonated MISP user across audit logging. The shell is designed to run actions as a supplied MISP user ID. However, the legacy SysLogLogable behavior stored that identity in behavior-instance state that could be overwritten when another model lazily attached the shared behavior. Consequently, subsequent CLI writes could lose the intended user attribution and be logged incorrectly. The commit also notes that CLI-originated records lacked a CLI marker, making them appear similar to ordinary web actions by that user. Version affected: ≤2.5.45
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的日志记录
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
MISP MISP 0 ~ 2.5.46 -

II. Public POCs for CVE-2026-90955

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III. Intelligence Information for CVE-2026-90955

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Same Patch Batch · MISP · 2026-09-14 · 5 CVEs total

CVE-2026-90961 9.3 CRITICAL MISP LdapAuth and LinOTPAuth Authentication Bypass via Empty or Non-String Credentials
CVE-2026-90895 8.4 HIGH MISP Interactive CLI Shell: Authorization Bypass, Credential Exposure, and Terminal Inject
CVE-2026-90893 5.1 MEDIUM MISP UserSettingsController CSRF Protection Bypass on setTheme, setHomePage, and eventInde
CVE-2026-90957 5.1 MEDIUM MISP: Stored XSS via Inline-Served SVG Organisation Logos and Report Pictures

IV. Related Vulnerabilities

Same product: MISP
Same vendor: MISP
Same weakness: CWE-778

V. Comments for CVE-2026-90955

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