Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
Sign in to view the affected projects.
No advisories yet.
Thu, 24 Sep 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Discourse
Discourse discourse |
|
| Vendors & Products |
Discourse
Discourse discourse |
Thu, 24 Sep 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Thu, 24 Sep 2026 17:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, the iframe src traversal guard did not treat literal backslashes as path separators after decoded dot segments. A crafted source could therefore pass an allowed_iframes subpath check while browser URL normalization moved the iframe outside the intended allowed path. The resulting iframe could load content from a location that the administrator did not allow. This issue is fixed in versions 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0. | |
| Title | Discourse: Reject literal backslash path separators in iframe src traversal guard | |
| Weaknesses | CWE-22 | |
| References |
|
|
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-24T17:11:34.752Z
Reserved: 2026-09-14T19:36:48.843Z
Link: CVE-2026-91123
Updated: 2026-09-24T17:11:30.907Z
Status : Deferred
Published: 2026-09-24T17:17:08.560
Modified: 2026-09-24T18:19:06.883
Link: CVE-2026-91123
No data.
OpenCVE Enrichment
Updated: 2026-09-24T19:15:15Z