{"id":"CVE-2026-109937","title":"Otter Blocks < 3.2.3 - Unauthenticated Open Redirect via Stripe Checkout Block","summary":"The Otter Blocks  WordPress plugin before 3.2.3 does not validate that a user-supplied return URL belongs to the site before using it to build the return destination of a Stripe Checkout session, allowing unauthenticated attackers to red…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","cvssSource":"adp","cwe":["CWE-601"],"product":"Otter Blocks","affected":["otter_blocks < 3.2.3"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-18T10:58:37.704515Z"},"published":"2026-10-18","updated":"2026-10-18","sourceUpdated":"2026-10-18T11:12:31.318Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-109937","references":[{"url":"https://wpscan.com/vulnerability/9765313d-c879-457f-851f-dab74b8d90a0/"}],"tags":["cve.org"],"ingestedAt":"2026-10-18T06:38:27.436Z","epss":0.00146,"epssPercentile":0.03767,"slug":"CVE-2026-109937","body":"## Overview\n\nThe Otter Blocks  WordPress plugin before 3.2.3 does not validate that a user-supplied return URL belongs to the site before using it to build the return destination of a Stripe Checkout session, allowing unauthenticated attackers to redirect victims who complete or cancel checkout to an arbitrary external URL.\n\n## Affected\n\n- `otter_blocks < 3.2.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":224055,"id":"CVE-2026-109937","ts":1792323693304,"field":"cvss","old":null,"new":"5.4"},{"seq":224054,"id":"CVE-2026-109937","ts":1792323693304,"field":"severity","old":"none","new":"medium"}]}