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CVE-2026-32113— Discourse: Open redirect via `sso_destination_url` cookie in `enter`

Quick assessment

Affected
discourse discourse
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Discourse是Discourse开源的一套开源的社区讨论平台。该平台包括社区、电子邮件和聊天室等功能。 Discourse 2026.1.3之前版本、2026.2.2之前版本和2026.3.0之前版本存在输入验证错误漏洞，该漏洞源于StaticController中的enter操作读取sso_destination_url cookie并重定向至该URL时未验证目标URL，可能导致重定向攻击。

AI Predicted 5.4 Difficulty: Easy EPSS 0.34% · P25
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I. Basic Information for CVE-2026-32113

Vulnerability Information
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Vulnerability Title
Discourse: Open redirect via `sso_destination_url` cookie in `enter`
Source: CVE Program / CVE List V5
Vulnerability Description
Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, the enter action in StaticController reads the sso_destination_url cookie and redirects to it with allow_other_host: true without validating the destination URL. While this cookie is normally set during legitimate DiscourseConnect Provider flows with cryptographically validated SSO payloads, cookies are client-controlled and can be set by attackers. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Vulnerability Title
Discourse 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Discourse是Discourse开源的一套开源的社区讨论平台。该平台包括社区、电子邮件和聊天室等功能。 Discourse 2026.1.3之前版本、2026.2.2之前版本和2026.3.0之前版本存在输入验证错误漏洞，该漏洞源于StaticController中的enter操作读取sso_destination_url cookie并重定向至该URL时未验证目标URL，可能导致重定向攻击。
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

Vendor Product Affected Versions CPE Subscribe
discourse discourse >= 2026.1.0-latest, < 2026.1.3 -

II. Public POCs for CVE-2026-32113

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III. Intelligence Information for CVE-2026-32113

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Patches & Fixes for CVE-2026-32113 (1)

Vendor Advisories for CVE-2026-32113 (1)

Other References for CVE-2026-32113 (1)

Same Patch Batch · discourse · 2026-03-31 · 15 CVEs total

CVE-2026-32273 5.4 MEDIUM Discourse: XSS on category description update via API
CVE-2026-32618 4.3 MEDIUM Discourse: Unauthorized channel membership inference via excluded_memberships_channel_id
CVE-2026-32951 4.3 MEDIUM Discourse: Authorization bypass in oneboxer via user-controlled category id
CVE-2026-32607 Discourse: Stored XSS via unescaped assignee name
CVE-2026-32620 Discourse: Missing post-level authorization allows whisper metadata disclosure
CVE-2026-32619 Discourse: Insufficient topic visibility check allows unauthorized poll manipulation in pr
CVE-2026-32243 Discourse: Stored XSS in discourse-ai shared conversations onebox
CVE-2026-32615 Discourse: Category group moderators can perform actions on topics in restricted categorie
CVE-2026-32143 Discourse: Admin-only report can be exported by moderators
CVE-2026-33074 Discourse: Vulnerability in discourse-subscriptions plugin allowing users to self-grant to
CVE-2026-33073 discourse-subscriptions plugin leaking stripe API key in multisite environment
CVE-2026-33415 Discourse: Improper Access Control in discourse-ai Allows Unauthorized Category Content Ex
CVE-2026-33300 Discourse: Hidden group names and access metadata are exposed to moderators through the `c
CVE-2026-33185 Discourse: Group SMTP test endpoint susceptible to SSRF

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-32113

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