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CVE-2026-10856— Open redirect in MISP dashboard button widget URL handling

AI Predicted 6.1 Difficulty: Moderate EPSS 0.15% · P4

Possible ATT&CK Techniques 1AI

T1566.001 · Spearphishing Attachment

Affected Version Matrix 1

VendorProductVersion RangeStatus
mispmisp≤ 2.5.38affected
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I. Basic Information for CVE-2026-10856

Vulnerability Information
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Vulnerability Title
Open redirect in MISP dashboard button widget URL handling
Source: NVD (National Vulnerability Database)
Vulnerability Description
A URL validation flaw in the MISP dashboard button widget allowed a crafted relative-looking URL to be accepted as a local path while being interpreted by browsers as an external URL. The validation rejected URLs containing an explicit scheme, host, or user component, but did not reject paths beginning with a slash followed by a backslash, such as /\example.com. Some browsers normalize backslashes in URLs as forward slashes, which can turn this into a scheme-relative external navigation target. In addition, the generated href concatenated the reconstructed URL with the original URL, increasing the possibility of unsafe or malformed link generation. An attacker able to configure or influence a dashboard button URL could craft a button that appears to point inside the application but redirects users to an attacker-controlled site when clicked. This could be used for phishing, credential theft, or social engineering. The patch fixes the issue by rejecting empty paths and paths starting with /\, and by emitting only the reconstructed validated URL in the anchor href.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: NVD (National Vulnerability Database)
Vulnerability Title
MISP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MISP是MISP开源的一套开源的软件解决方案。该产品用于收集、存储、分发、共享网络安全指标，并具有威胁网络安全事件分析和恶意软件分析等功能。 MISP存在安全漏洞，该漏洞源于URL验证缺陷，可能导致攻击者配置一个看似指向应用内部但实际重定向用户到攻击者控制站点的按钮。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
mispmisp 0 ~ 2.5.38 -

II. Public POCs for CVE-2026-10856

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III. Intelligence Information for CVE-2026-10856

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Patches & Fixes for CVE-2026-10856 (1)

Same Patch Batch · misp · 2026-06-04 · 8 CVEs total

CVE-2026-10860MISP CRUDComponent delete validation bypass via operator precedence error
CVE-2026-10854Unauthorized exposure of private galaxies in MISP event template creation
CVE-2026-10863MISP User-controlled order parameter in correlations over-correlation endpoint
CVE-2026-10864MISP Dashboard widget field selection may expose restricted user and organisation data
CVE-2026-10868MISP user edit endpoint mass assignment vulnerability allows unauthorized user account mod
CVE-2026-10861MISP post-login open redirect via pre_login_requested_url
CVE-2026-10855MISP Event template importer authorization bypass

IV. Related Vulnerabilities

Same product: misp
Same vendor: misp
Same weakness: CWE-601

V. Comments for CVE-2026-10856

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