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7.3
CVE-2026-111667: Rebuild 4.5 allows low-privilege users to read private task comments
CVE-2026-111667 · published 19 days ago
Summary
In Rebuild versions up to 4.5, a flaw in the comment‑listing feature lets users who are logged in but not members of a project see the comments and attachment links of tasks inside that private project. This can expose confidential discussion and files. Apply the latest Rebuild update or restrict access to the comment list endpoint until the fix is deployed.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| getrebuild | rebuild | <= 4.5.0 |
Original advisory text
REBUILD through 4.5.0 Missing Authorization via /project/comments/list Endpoint
REBUILD through 4.5.0 contains a missing authorization vulnerability in TaskCommentController.commentList that allows authenticated low-privileged users to read task comments without project membership checks. Attackers can supply the id of a task in a private project to the /project/comments/list endpoint to retrieve its comment content and attachment references.
References
- https://hackmd.io/@hieuPenguinnn/getrebuild-rebuild-project-task-comment-idor Vendor Advisory
- https://github.com/getrebuild/rebuild/blob/4.5.0/src/main/java/com/rebuild/web/p... Third Party Advisory
- https://www.vulncheck.com/advisories/rebuild-through-4.5.0-missing-authorization... Vendor Advisory
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-1116... Vendor Advisory
- https://github.com/getrebuild/rebuild Product
- https://nvd.nist.gov/vuln/detail/CVE-2026-111667 Vendor Advisory
Internet-facing
60 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit (estimated)
- Gives an attacker partial control (estimated)
Severity
7.3
High
Type
CWE-639Authorization Bypass Through User-Controlled Key
Timeline
Published16 Oct 2026
Updated4 Nov 2026
First seen16 Oct 2026
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