{"id":"CVE-2026-55421","title":"Open edX Platform enables the authoring and delivery of online learning at any scale","summary":"Open edX Platform enables the authoring and delivery of online learning at any scale. Prior to commit 00b7c3c, the endpoint accepts user-supplied files[].url, performs a server-side fetch using \"requests.get(url, allow_redirects=True)\". …","severity":"medium","cvss":6.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","cwe":["CWE-918"],"published":"2026-09-02","updated":"2026-09-09","sourceUpdated":"2026-09-09T21:04:42.813","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55421","references":[{"url":"https://github.com/openedx/openedx-platform/commit/00b7c3ce418b487c5696b064fc5033594b045e75","label":"security-advisories@github.com"},{"url":"https://github.com/openedx/openedx-platform/commit/241b914a191ec24658b9cde75a7114db40a5d53a","label":"security-advisories@github.com"},{"url":"https://github.com/openedx/openedx-platform/commit/c9831c2c9f53b7aa9a61d80e6d91a9941ce52ec6","label":"security-advisories@github.com"},{"url":"https://github.com/openedx/openedx-platform/security/advisories/GHSA-fpf9-9rpr-jvrx","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00264,"epssPercentile":0.1857,"ingestedAt":"2026-09-09T21:22:45.563Z","slug":"CVE-2026-55421","body":"## Overview\n\nOpen edX Platform enables the authoring and delivery of online learning at any scale. Prior to commit 00b7c3c, the endpoint accepts user-supplied files[].url, performs a server-side fetch using \"requests.get(url, allow_redirects=True)\". The fetched bytes are then returned inside a ZIP response. This enables SSRF with response exfiltration. Redirect-following is enabled, and there is no timeout in the vulnerable fetch path. This issue has been patched via commit 00b7c3c.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":37,"depthScoreParts":{"impact":37.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}