changelog.com before commit 7b35e829 contains a missing authorization vulnerability that allows unauthenticated attackers to read unpublished content via preview routes in PostController, NewsIssueController and NewsItemController. Attackers can enumerate hashid post IDs, sequential newsletter slugs and integer news IDs against preview endpoints to read draft posts, unsent newsletters and declined news items.
Fix
Patch, vendor advisory and mitigation references on NVD 1
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.9 · thechangelogNVD modified 2026-10-30 17:19
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 6
- https://github.com/thechangelog/changelog.com/issues/581 issue-tracking
- https://hackmd.io/@hieund/changelog-com-preview-unpublished-content-missing-authz third-party-advisory
- https://github.com/thechangelog/changelog.com/commit/7b35e82934be93e8b0064299a611c98d55b3e0eb patch
- https://github.com/thechangelog/changelog.com/blob/73fdd9e19cb609573f9cd8ed195cd9abaeb24f8a/lib/changelog_web/controllers/post_controller.ex#L48-L49 technical-description
- https://github.com/thechangelog/changelog.com product
- https://www.vulncheck.com/advisories/changelog-com-before-commit-7b35e829-missing-authorization-via-preview-routes third-party-advisory