CVE-2026-32113

April 1, 2026, 2:24 p.m.

5.1
Medium

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.

Product(s) Impacted

Vendor Product Versions
Discourse
  • Discourse
  • 2026.1.0-latest-2026.1.3, 2026.2.0-latest-2026.2.2, 2026.3.0-latest-2026.3.0

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-601
URL Redirection to Untrusted Site ('Open Redirect')
A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a discourse discourse 2026.1.0-latest-2026.1.3 / / / / / / /
a discourse discourse 2026.2.0-latest-2026.2.2 / / / / / / /
a discourse discourse 2026.3.0-latest-2026.3.0 / / / / / / /

References

https://github.com/discourse/discourse/commit/080408b93d00305b51d71f63f755f43fa601884d
https://github.com/discourse/discourse/security/advisories/GHSA-378j-ccw4-4fwh
https://meta.discourse.org/t/using-discourse-as-a-sso-provider/32974
https://meta.discourse.org/t/use-discourse-as-an-identity-provider-sso-discourseconnect/32974

Tags

[email protected]
CWE-601
2026-03-31
CVE-2026-32113

CVSS Score

5.1 / 10

CVSS Data - 4.0

  • Attack Vector: NETWORK
  • Attack Complexity: HIGH
  • Attack Requirements: PRESENT
  • Privileges Required: NONE
  • User Interaction: ACTIVE
  • Scope:
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: NONE
  • Exploit Maturity: NOT_DEFINED

    • 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

    View Vector String

Timeline

Published: March 31, 2026, 6:16 p.m.
Last Modified: April 1, 2026, 2:24 p.m.

Status : Undergoing Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.