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CVE-2026-92002— MISP: Authentication failure logging suppressed during Redis unavailability

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.

受影响的 MISP 版本使用 Redis 对重复的认证失败日志条目进行限流。其目的是在避免产生过多重复日志的同时，仍能记录认证失败的活动。 然而，当无法连接 Redis 时， 会返回 。存在漏洞的 逻辑仅当存在 Redis 实例且不存在限流键时才返回 。因此，当 Redis 不可用时，该函数完全不允许写入日志，从而在故障期间有效地抑制了认证失败的日志记录。 受影响版本：≤ 2.5.45

CVSS 5.1 · Medium

Possible ATT&CK Techniques 2 AI

T1070 · Indicator Removal T1562
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I. Basic Information for CVE-2026-92002

Vulnerability Information
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Vulnerability Title
MISP: Authentication failure logging suppressed during Redis unavailability
Source: CVE Program / CVE List V5
Vulnerability Description
Affected versions of MISP use Redis to throttle repeated authentication-failure log entries. The intent is to avoid excessive duplicate logs while still recording failed authentication activity. However, User->setupRedis() returns false when Redis cannot be reached. The vulnerable _shouldLog() logic only returned true when a Redis instance existed and no throttle key was present. Therefore, when Redis was unavailable, the function did not allow the log write at all, effectively silencing authentication-failure logging for the duration of the outage. Version affected: ≤2.5.45
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/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-2026-92002

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III. Intelligence Information for CVE-2026-92002

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Patches & Fixes for CVE-2026-92002 (1)

Same Patch Batch · MISP · 2026-09-15 · 8 CVEs total

CVE-2026-91825 7.1 HIGH MISP: Missing Authorization Check for Event Sharing Group When Distribution Field Is Omitt
CVE-2026-91846 7.1 HIGH MISP Collection Element Add Missing Authorization on Referenced Object UUID
CVE-2026-91819 6.9 MEDIUM MISP: HTTP Method Override Bypasses CSRF and Form Validation in BetterSecurityComponent
CVE-2026-92003 6.9 MEDIUM MISP Unthrottled Authentication Failure Log Writes Enable Resource Exhaustion
CVE-2026-91851 5.3 MEDIUM MISP Dashboard Template ACL Bypass Due to VARCHAR-to-Integer Type Coercion in Permission F
CVE-2026-91857 5.3 MEDIUM MISP: State-changing actions accessible via GET request enabling CSRF
CVE-2026-91859 5.3 MEDIUM MISP Access Log Entry Overwritten by Error Controller's Second beforeFilter Pass

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-92002

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