CVE-2026-10854Network attack vector

Authenticated metadata disclosure via unrestricted galaxy query

Published Jun 4, 2026 · Updated Jun 4, 2026

Information disclosure in MISP 2.5.38 and earlier allows remote authenticated users to read private galaxy metadata across organizations. EventTemplatesController.php's __setBuilderConfig() queried every enabled Galaxy row using only the enabled flag, without organization or distribution conditions. Any authenticated non-site-admin account could reach the event-template builder and read galaxy types and descriptions belonging to other organizations.

CVSS severity5.3
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in MISP 2.5.38 and earlier allows remote authenticated users to read private galaxy metadata across organizations. EventTemplatesController.php's __setBuilderConfig() queried every enabled Galaxy row using only the enabled flag, without organization or distribution conditions. Any authenticated non-site-admin account could reach the event-template builder and read galaxy types and descriptions belonging to other organizations.

The record

CVE
CVE-2026-10854
Published
Jun 4, 2026
Updated
Jun 4, 2026
Vendor
MISP Project
Product
MISP
Classifications
CWE-200, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.5.38

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MISP Project · MISPversion=0 <=2.5.38

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
5.3CIRCLCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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