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before commit 7b35e829 contains a missing authorization vulnerability that allows unauthenticated attackers to read unpublished content via preview routes in PostController, NewsIssueController and NewsItemController.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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
thechangelog:changelog.com
References 7
https://github.com/thechangelog/changelog.com
disclosure@vulncheck.com
https://github.com/thechangelog/changelog.com/blob/73fdd9e19cb609573f9cd8ed195c…
disclosure@vulncheck.com
https://github.com/thechangelog/changelog.com/commit/7b35e82934be93e8b0064299a6…
disclosure@vulncheck.com
https://github.com/thechangelog/changelog.com/issues/581
disclosure@vulncheck.com
https://hackmd.io/@hieund/changelog-com-preview-unpublished-content-missing-aut…
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/changelog-com-before-commit-7b35e829-missi…
disclosure@vulncheck.com
https://hackmd.io/@hieund/cve-2026-119763-changelog-com-preview-unpublished-con…
134c704f-9b21-4f2e-91b3-4a467353bcc0