CVE-2026-54358Disclosure

LOWCVSS 7.5 · HIGH

Exploitation ongoing with high activity in latest observed window (1 mentions)

Immediate actions

  • Prioritize remediation for affected systems immediately
  • Assume compromise if assets are exposed
  • Track advisory updates for patch or workaround availability

Recommended action window: Immediate (within 24h)

NVD description

An incorrect authorization vulnerability in MISP allows an organization administrator to target site administrator accounts belonging to the same organization through the administrative email functionality. The affected code restricted organization administrators to users within their own organization, but did not exclude accounts assigned a site administrator role from recipient queries. As a result, an organization administrator could perform privileged account-management actions, such as initiating a password reset workflow, against a higher-privileged site administrator account in the same organization. Successful exploitation may allow an authenticated organization administrator to interfere with or potentially take over a site administrator account, resulting in privilege escalation and full compromise of the MISP instance’s confidentiality, integrity, and availability. Attack prerequisites: The attacker must be authenticated as an organization administrator in the same organization as a site administrator account.

3.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-863

Priority

LOW

Exploitation

ACTIVE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

  • Active exploitation appears in 1 classified signals
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Active exploitation reported across 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-06-12); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-06-12: 1Mentions · 2026-06-13: 1Active Exploitation · 2026-06-13: 1Technical Details · 2026-06-12: 106-1206-13
Signal classification2 categories
Disclosure
150.0%
Active Exploitation
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-06-121
Disclosure1
2026-06-131
Active Exploitation1
Full discourse2 posts
  • VulDB 🛡@vuldb
    Active Exploitation

    Some increased actor activities are shown targeting MISP (CVE-2026-54358) https://vuldb.com/vuln/370709/cti

    Post summary

    The post indicates actors are increasingly targeting MISP via CVE‑2026‑54358, signaling active exploitation, but lacks PoC, exploit details, or patch information.

    0000063
    2.2K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-54358 Incorrect Authorization in MISP Allows Organization Administrator Privilege Escalation https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-54358

    Post summary

    A new CVE (CVE-2026-54358) is disclosed describing an authorization flaw in MISP that could let users become organization administrators. No PoC, exploit, patch, or active exploitation evidence is provided in the text.

    0000040
    4.0K followersView on X

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