Vulnerability Description
Bytebase before 3.16.0 contains an authorization bypass vulnerability in the UpdateIssueComment handler that allows low-privileged project users to modify comments in other projects by supplying a foreign comment UID. Attackers with any project role, including Project Viewer, can set their own project's issue as parent and reference another project's comment UID to overwrite comments they cannot access.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/bytebase/bytebase
- https://github.com/bytebase/bytebase/blob/3.15.1/backend/api/v1/issue_service.go
- https://github.com/bytebase/bytebase/commit/270e25529731b59988b58f4a4b3bda431c74
- https://github.com/bytebase/bytebase/issues/19369
- https://github.com/bytebase/bytebase/pull/19552
- https://github.com/bytebase/bytebase/releases/tag/3.16.0
- https://www.vulncheck.com/advisories/bytebase-before-3.16.0-authorization-bypass
FAQ
What is CVE-2026-115321?
CVE-2026-115321 is a vulnerability with a CVSS score of 4.3 (MEDIUM). Bytebase before 3.16.0 contains an authorization bypass vulnerability in the UpdateIssueComment handler that allows low-privileged project users to modify comments in other projects by supplying a for...
How severe is CVE-2026-115321?
CVE-2026-115321 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-115321?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.