CVE-2026-115321Bytebase before 3.16.0 Authorization Bypass via UpdateIssueComment
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Weakness (CWE)
- CWE-639
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Received
- Record last updated
- Oct 22, 2026
- First seen by InfoSec Signals
- Oct 22, 2026
Affected products
bytebase bytebase bytebase:bytebase (from the name) | before 3.16.0; 3.16.0 not affected | CNA record |
References
- https://github.com/bytebase/bytebase/issues/19369issue-tracking
- https://github.com/bytebase/bytebase/pull/19552patch, issue-tracking
- https://github.com/bytebase/bytebase/commit/270e25529731b59988b58f4a4b3bda431c748bc9patch
- https://github.com/bytebase/bytebase/releases/tag/3.16.0release-notes
- https://github.com/bytebase/bytebase/blob/3.15.1/backend/api/v1/issue_service.go#L1116technical-description
- https://github.com/bytebase/bytebaseproduct
- https://www.vulncheck.com/advisories/bytebase-before-3.16.0-authorization-bypass-via-updateissuecommentthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.