MISP misp-modules up to 3.0.6 Qrcode html_to_markdown certificate validation

CVSS Meta Temp Score
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CTI Interest Score
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3.6$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in MISP misp-modules up to 3.0.6. The impacted element is the function html_to_markdown of the component Qrcode Module. The manipulation results in certificate validation. This vulnerability is cataloged as CVE-2026-44363. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in MISP misp-modules up to 3.0.6. Affected is the function html_to_markdown of the component Qrcode Module. The manipulation with an unknown input leads to a certificate validation vulnerability. CWE is classifying the issue as CWE-295. The product does not validate, or incorrectly validates, a certificate. This is going to have an impact on integrity. CVE summarizes:

MISP modules are autonomous modules that can be used to extend MISP for new services. Prior to 3.0.7, an unsafe remote resource fetching vulnerability existed in MISP Modules expansion modules. The html_to_markdown module accepted arbitrary HTTP(S) URLs without sufficient validation, which could allow Server-Side Request Forgery against loopback, private, or link-local network resources. Additionally, the qrcode module disabled TLS certificate verification when retrieving remote images, exposing requests to potential man-in-the-middle interception or response tampering. The issue was fixed by validating URL schemes, blocking local and private address ranges, resolving hostnames before fetching, enforcing request timeouts, and re-enabling TLS certificate verification. This vulnerability is fixed in 3.0.7.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-44363 since 05/05/2026. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1587.003.

Upgrading to version 3.0.7 eliminates this vulnerability. Applying the patch 01a522f2772fc31eeed379ccf23750c8a3d401db is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1547). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Open Source MISP

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: misp-modules 3.0.7
Patch: 01a522f2772fc31eeed379ccf23750c8a3d401db

Timelineinfo

05/05/2026 CVE reserved
05/14/2026 +9 days Advisory disclosed
05/14/2026 +0 days VulDB entry created
05/16/2026 +1 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-fhq3-2gf3-8f3j
Status: Confirmed

CVE: CVE-2026-44363 (🔒)
GCVE (CVE): GCVE-0-2026-44363
GCVE (VulDB): GCVE-100-363744
CERT Bund: WID-SEC-2026-1547 - MISP und MISP Modules: Mehrere Schwachstellen

Entryinfo

Created: 05/14/2026 05:42
Updated: 05/16/2026 01:44
Changes: 05/14/2026 05:42 (71), 05/16/2026 01:44 (7)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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