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CVE-2026-91157— Discourse: Media uploads remain publicly accessible after category permissions are restricted

一分钟漏洞结论

影响对象
discourse discourse
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。

Discourse is an open-source discussion platform. Prior to 2026.9.0, 2026.8.1, 2026.7.3, and 2026.1.9, sites with secure uploads enabled did not reconcile existing upload security metadata when a previously public category became read-restricted or when categor

CVSS 7.5 · High

影响版本矩阵 4

厂商产品 版本范围状态
discourse discourse < 2026.1.9 affected
>= 2026.7.0-latest, < 2026.7.3 affected
>= 2026.8.0-latest, < 2026.8.1 affected
>= 2026.9.0-latest, < 2026.9.0 affected
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一、 漏洞 CVE-2026-91157 基础信息

漏洞信息

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Vulnerability Title
Discourse: Media uploads remain publicly accessible after category permissions are restricted
来源: CVE Program / CVE List V5
Vulnerability Description
Discourse is an open-source discussion platform. Prior to 2026.9.0, 2026.8.1, 2026.7.3, and 2026.1.9, sites with secure uploads enabled did not reconcile existing upload security metadata when a previously public category became read-restricted or when category permissions changed during a bulk import. Media and attachments uploaded while the category was public retained a public accessibility flag and remained reachable by anonymous users through their short upload URLs, including uploads associated with deleted topics. This issue is fixed in versions 2026.9.0, 2026.8.1, 2026.7.3, and 2026.1.9.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
信息暴露
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
discourse discourse < 2026.1.9 -

二、漏洞 CVE-2026-91157 的公开POC

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三、漏洞 CVE-2026-91157 的情报信息

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CVE-2026-91157 其他参考 (5)

同批安全公告 · discourse · 2026-10-14 · 共 3 条

CVE-2026-91159 7.7 HIGH Discourse: Stored oEmbed HTML injection via allowed iframe
CVE-2026-91156 7.5 HIGH Discourse: Chat MessageBus delivers read-restricted messages to unauthorized users

IV. Related Vulnerabilities

Same product: discourse
Same vendor: discourse
Same weakness: CWE-200

V. Comments for CVE-2026-91157

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