NCSC-2026-0213
Vulnerability from csaf_ncscnl - Published: 2026-06-29 08:08 - Updated: 2026-06-29 08:08A vulnerability in MISP core controllers allowed authenticated users to manipulate client-supplied keys, enabling unauthorized data overwrites and ownership changes, mitigated by key validation and strict authorization checks.
CWE-639 - Authorization Bypass Through User-Controlled Key| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
vers:unknown/*
MISP / MISP
|
vers:unknown/* |
MISP Core had a critical access-control vulnerability in bulk deletion of Event Reports and Sharing Groups, allowing users with broad roles to delete items from other organizations, which was resolved by adding per-object authorization checks.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
vers:unknown/*
MISP / MISP
|
vers:unknown/* |
MISP core contains multiple access-control vulnerabilities that allow authenticated users with specific permissions to perform unauthorized cross-organization data modifications or deletions, compromising data integrity and disrupting workflows.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
vers:unknown/*
MISP / MISP
|
vers:unknown/* |
Azure Active Directory's OAuth 2.0 implementation had multiple security flaws including improper state parameter usage, weak CSRF protections, and insecure logging, which were mitigated by cryptographically secure state values, session rotation, HTTPS enforcement, and sanitized logging.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
vers:unknown/*
MISP / MISP
|
vers:unknown/* |
MISP had a vulnerability allowing authenticated administrators to execute remote code by configuring the NDJSON error log path to a web-accessible PHP file with injected PHP code, which was fixed by restricting log paths and file extensions.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
vers:unknown/*
MISP / MISP
|
vers:unknown/* |
MISP had a vulnerability allowing authenticated administrators to execute arbitrary code by specifying arbitrary Kafka configuration files, which was fixed by restricting configuration file locations to approved directories outside the webroot and upload areas.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
vers:unknown/*
MISP / MISP
|
vers:unknown/* |
{
"document": {
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE"
}
},
"lang": "nl",
"notes": [
{
"category": "legal_disclaimer",
"text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
},
{
"category": "description",
"text": "MISP heeft meerdere kwetsbaarheden verholpen in het MISP platform.",
"title": "Feiten"
},
{
"category": "description",
"text": "De kwetsbaarheden betreffen onder andere het manipuleren van client-supplied primary en foreign keys door geauthenticeerde gebruikers, wat leidde tot ongeautoriseerd overschrijven van data, eigendomsoverdracht en wijziging van de scope van records. Verder was er een gebrekkige toegangcontrole bij bulkverwijdering van Event Reports en Sharing Groups, waardoor gebruikers met brede rolrechten items van andere organisaties konden verwijderen. Ook waren er meerdere toegangcontroleproblemen die het mogelijk maakten om ongeautoriseerde wijzigingen of verwijderingen over organisatiegrenzen heen uit te voeren. Daarnaast bevatte het platform een kwetsbaarheid waarbij geauthenticeerde sitebeheerders de NDJSON error log path konden instellen naar een webtoegankelijk PHP-bestand, wat leidde tot remote code execution via ge\u00efnjecteerde PHP-code in logbestanden. Verder konden geauthenticeerde beheerders willekeurige Kafka configuratiebestanden specificeren, waarmee arbitrary code execution mogelijk was door het laden van kwaadaardige libraries. Deze kwetsbaarheden zijn gemitigeerd door het invoeren van server-side validatie, strikte autorisatiecontroles, beperkingen op logpadconfiguraties, en het afdwingen van toegestane locaties voor configuratiebestanden.",
"title": "Interpretaties"
},
{
"category": "description",
"text": "MISP heeft updates uitgebracht waarin deze kwetsbaarheden zijn verholpen door het implementeren van server-side validatie van sleutels, per-object autorisatiecontroles bij verwijderingen, beperkingen op logpadconfiguraties, en het afdwingen van toegestane locaties voor Kafka configuratiebestanden. Zie bijgevoegde referenties voor meer informatie.",
"title": "Oplossingen"
},
{
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"text": "medium",
"title": "Kans"
},
{
"category": "general",
"text": "high",
"title": "Schade"
},
{
"category": "general",
"text": "Improper Control of Generation of Code (\u0027Code Injection\u0027)",
"title": "CWE-94"
},
{
"category": "general",
"text": "Session Fixation",
"title": "CWE-384"
},
{
"category": "general",
"text": "Authorization Bypass Through User-Controlled Key",
"title": "CWE-639"
},
{
"category": "general",
"text": "Inclusion of Functionality from Untrusted Control Sphere",
"title": "CWE-829"
},
{
"category": "general",
"text": "Missing Authorization",
"title": "CWE-862"
},
{
"category": "general",
"text": "Incorrect Authorization",
"title": "CWE-863"
}
],
"publisher": {
"category": "coordinator",
"contact_details": "cert@ncsc.nl",
"name": "Nationaal Cyber Security Centrum",
"namespace": "https://www.ncsc.nl/"
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"references": [
{
"category": "external",
"summary": "Reference",
"url": "https://github.com/advisories/GHSA-3vhv-jx5j-gj6p"
},
{
"category": "external",
"summary": "Reference",
"url": "https://github.com/advisories/GHSA-7v9f-64q7-x2jg"
},
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"category": "external",
"summary": "Reference",
"url": "https://github.com/advisories/GHSA-834x-pvxg-xh58"
},
{
"category": "external",
"summary": "Reference",
"url": "https://github.com/advisories/GHSA-MF7V-X7R6-FQ57"
},
{
"category": "external",
"summary": "Reference",
"url": "https://github.com/advisories/GHSA-ch28-mjgc-m4wr"
},
{
"category": "external",
"summary": "Reference",
"url": "https://github.com/advisories/GHSA-r3v6-qw6x-wf6h"
}
],
"title": "Kwetsbaarheden verholpen in MISP platform",
"tracking": {
"current_release_date": "2026-06-29T08:08:17.629460Z",
"generator": {
"date": "2025-08-04T16:30:00Z",
"engine": {
"name": "V.A.",
"version": "1.3"
}
},
"id": "NCSC-2026-0213",
"initial_release_date": "2026-06-29T08:08:17.629460Z",
"revision_history": [
{
"date": "2026-06-29T08:08:17.629460Z",
"number": "1.0.0",
"summary": "Initiele versie"
}
],
"status": "final",
"version": "1.0.0"
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"vulnerabilities": [
{
"cve": "CVE-2026-56422",
"cwe": {
"id": "CWE-639",
"name": "Authorization Bypass Through User-Controlled Key"
},
"notes": [
{
"category": "other",
"text": "Authorization Bypass Through User-Controlled Key",
"title": "CWE-639"
},
{
"category": "description",
"text": "A vulnerability in MISP core controllers allowed authenticated users to manipulate client-supplied keys, enabling unauthorized data overwrites and ownership changes, mitigated by key validation and strict authorization checks.",
"title": "Summary"
},
{
"category": "general",
"text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"title": "CVSSV4"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-56422 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-56422.json"
}
],
"title": "CVE-2026-56422"
},
{
"cve": "CVE-2026-56423",
"cwe": {
"id": "CWE-862",
"name": "Missing Authorization"
},
"notes": [
{
"category": "other",
"text": "Missing Authorization",
"title": "CWE-862"
},
{
"category": "description",
"text": "MISP Core had a critical access-control vulnerability in bulk deletion of Event Reports and Sharing Groups, allowing users with broad roles to delete items from other organizations, which was resolved by adding per-object authorization checks.",
"title": "Summary"
},
{
"category": "general",
"text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"title": "CVSSV4"
}
],
"product_status": {
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"category": "self",
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"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-56423.json"
}
],
"scores": [
{
"cvss_v3": {
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"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"products": [
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"title": "CVE-2026-56423"
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{
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"cwe": {
"id": "CWE-639",
"name": "Authorization Bypass Through User-Controlled Key"
},
"notes": [
{
"category": "other",
"text": "Authorization Bypass Through User-Controlled Key",
"title": "CWE-639"
},
{
"category": "other",
"text": "Missing Authorization",
"title": "CWE-862"
},
{
"category": "other",
"text": "Incorrect Authorization",
"title": "CWE-863"
},
{
"category": "description",
"text": "MISP core contains multiple access-control vulnerabilities that allow authenticated users with specific permissions to perform unauthorized cross-organization data modifications or deletions, compromising data integrity and disrupting workflows.",
"title": "Summary"
},
{
"category": "general",
"text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:L/SI:N/SA:N",
"title": "CVSSV4"
}
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"product_status": {
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},
"references": [
{
"category": "self",
"summary": "CVE-2026-56424 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-56424.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 8.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"CSAFPID-1"
]
}
],
"title": "CVE-2026-56424"
},
{
"cve": "CVE-2026-56425",
"cwe": {
"id": "CWE-384",
"name": "Session Fixation"
},
"notes": [
{
"category": "other",
"text": "Session Fixation",
"title": "CWE-384"
},
{
"category": "description",
"text": "Azure Active Directory\u0027s OAuth 2.0 implementation had multiple security flaws including improper state parameter usage, weak CSRF protections, and insecure logging, which were mitigated by cryptographically secure state values, session rotation, HTTPS enforcement, and sanitized logging.",
"title": "Summary"
},
{
"category": "general",
"text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"title": "CVSSV4"
}
],
"product_status": {
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]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-56425 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-56425.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 8.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
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"products": [
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],
"title": "CVE-2026-56425"
},
{
"cve": "CVE-2026-56446",
"cwe": {
"id": "CWE-94",
"name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
},
"notes": [
{
"category": "other",
"text": "Improper Control of Generation of Code (\u0027Code Injection\u0027)",
"title": "CWE-94"
},
{
"category": "description",
"text": "MISP had a vulnerability allowing authenticated administrators to execute remote code by configuring the NDJSON error log path to a web-accessible PHP file with injected PHP code, which was fixed by restricting log paths and file extensions.",
"title": "Summary"
},
{
"category": "general",
"text": "CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N",
"title": "CVSSV4"
}
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"references": [
{
"category": "self",
"summary": "CVE-2026-56446 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-56446.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.2,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"CSAFPID-1"
]
}
],
"title": "CVE-2026-56446"
},
{
"cve": "CVE-2026-56447",
"cwe": {
"id": "CWE-829",
"name": "Inclusion of Functionality from Untrusted Control Sphere"
},
"notes": [
{
"category": "other",
"text": "Inclusion of Functionality from Untrusted Control Sphere",
"title": "CWE-829"
},
{
"category": "description",
"text": "MISP had a vulnerability allowing authenticated administrators to execute arbitrary code by specifying arbitrary Kafka configuration files, which was fixed by restricting configuration file locations to approved directories outside the webroot and upload areas.",
"title": "Summary"
},
{
"category": "general",
"text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N",
"title": "CVSSV4"
}
],
"product_status": {
"known_affected": [
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},
"references": [
{
"category": "self",
"summary": "CVE-2026-56447 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-56447.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.2,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"CSAFPID-1"
]
}
],
"title": "CVE-2026-56447"
}
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.