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Solution
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Workaround
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Thu, 24 Sep 2026 18:30:00 +0000
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ssvc
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Thu, 24 Sep 2026 17:00:00 +0000
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| 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 |
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| Metrics |
cvssV3_1
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Projects
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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
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