CVE-2026-95671— MISP Collections: Missing Authorization Check for Sharing Group on PUT Request in collections/add
一分钟漏洞结论
影响对象
MISP MISP
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
In MISP, the CollectionsController add() method enforced the sharing-group usability authorization check and element capture only when the HTTP request method was POST. However, the underlying CRUDComponent::add() method persists data on both POST and PUT requ
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一、 漏洞 CVE-2026-95671 基础信息
漏洞信息
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Vulnerability Title
MISP Collections: Missing Authorization Check for Sharing Group on PUT Request in collections/add
来源: CVE Program / CVE List V5
Vulnerability Description
In MISP, the CollectionsController add() method enforced the sharing-group usability authorization check and element capture only when the HTTP request method was POST. However, the underlying CRUDComponent::add() method persists data on both POST and PUT requests. As a result, an authenticated user could issue a PUT request to the collections/add endpoint, bypassing the sharing-group authorization check entirely. This allowed the creation of a collection with distribution=4 (shared with a specific sharing group) targeting a sharing group that the user was not authorized to use. The bypassed check would normally verify that the current user has access to the specified sharing group before allowing the collection to be associated with it.
The security impact is that an authenticated user can place collection data into a sharing group context they do not have legitimate access to, potentially exposing that data to all members of the unauthorized sharing group and violating the intended access-control boundaries of the MISP instance.
The vulnerability requires an authenticated session and knowledge of a valid sharing group identifier; no user interaction or special tooling is needed beyond sending a PUT request instead of a POST request to the same endpoint.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-95671 的公开POC
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CVE-2026-95671 补丁与修复 (1)
同批安全公告 · MISP · 2026-09-22 · 共 19 条
| CVE-2026-95806 | 7.7 HIGH | MISP: PHP phar stream wrapper enables deserialization and code execution via caller-influe |
| CVE-2026-95658 | 6.9 MEDIUM | MISP CSRF vulnerability in workflow moduleStatelessExecution allows cross-site execution o |
| CVE-2026-95754 | 6.9 MEDIUM | MISP: Disabled-user check ineffective in pre-authentication TOTP login branch |
| CVE-2026-95679 | 6.9 MEDIUM | MISP Unauthenticated Blind SSRF via XML Body Processing |
| CVE-2026-95667 | 6.9 MEDIUM | MISP Installer Log and FIFO Created World-Readable, Exposing Sensitive Credentials |
| CVE-2026-95697 | 5.3 MEDIUM | MISP: Insufficient Authorization Allows Sharing Group Editors to Overwrite Organization Me |
| CVE-2026-95805 | 5.3 MEDIUM | MISP ACLComponent: Typo in previewEventAttributes ACL key bypasses intended access restric |
| CVE-2026-95698 | 5.3 MEDIUM | MISP Path Traversal in OrgImgHelper findOrgImage via Crafted Organization Name |
| CVE-2026-95693 | 5.3 MEDIUM | MISP Information Disclosure via Forged Upload Path |
| CVE-2026-95674 | 5.3 MEDIUM | MISP EventsController queryEnrichment allows querying unavailable or legacy modules withou |
| CVE-2026-95683 | 5.3 MEDIUM | MISP Overmind Event View Discloses Report Content Bypassing Report-Level ACL |
| CVE-2026-95685 | 5.3 MEDIUM | MISP Missing Authorization on replaceSuggestionInReport Event Report Action |
| CVE-2026-95661 | 5.1 MEDIUM | MISP Reflected Cross-Site Scripting in Attribute Histogram via Unescaped URL-Supplied Type |
| CVE-2026-95665 | 5.1 MEDIUM | MISP Reflected Cross-Site Scripting in Event Export Confirmation Form via Unescaped JSON |
| CVE-2026-95703 | 5.1 MEDIUM | MISP OrganisationsController File Existence and Image-Type Oracle via Forged Upload tmp_na |
| CVE-2026-95701 | 5.1 MEDIUM | MISP Path Traversal via Organization Name in Org-Statistics Logo Check |
| CVE-2026-95659 | 4.8 MEDIUM | MISP Reflected XSS via Unvalidated Object Type in AnalystData Overmind Thread |
| CVE-2026-95682 | 4.8 MEDIUM | MISP Stored Cross-Site Scripting via Unescaped Organization Name in Admin Email View |
IV. Related Vulnerabilities
Same product: MISP
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CVE-2026-95806
MISP: PHP phar stream wrapper enables deserialization and co -
CVE-2026-95805
MISP ACLComponent: Typo in previewEventAttributes ACL key by -
CVE-2026-95754
MISP: Disabled-user check ineffective in pre-authentication -
CVE-2026-95703
MISP OrganisationsController File Existence and Image-Type O -
CVE-2026-95701
MISP Path Traversal via Organization Name in Org-Statistics
Same vendor: MISP
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CVE-2026-95703
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CVE-2026-95701
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Same weakness: CWE-862
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V. Comments for CVE-2026-95671
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