CVE-2026-115321

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.28% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 20.7% of scored records. A rank, not a probability.

NVD base score

5.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-10-23.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-22 10:57Z7 DAYS AGO

Last updated

2026-10-23 15:05Z6 DAYS AGO

Reserved

2026-10-22

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Weaknesses

• CWE-639Authorization Bypass Through User-Controlled KeyBase

Data version

5.2

Document digest

fd862b9e24e8471c7b2a499a4700cc8ec18a6dd47ded09a13cccfbca58043567

• github.comhttps://github.com/bytebase/bytebase/issues/19369issue-tracking
• github.comhttps://github.com/bytebase/bytebase/pull/19552patchissue-tracking
• github.comhttps://github.com/bytebase/bytebase/commit/270e25529731b59988b58f4a4b3bda431c748bc9patch
• github.com3.16.0 Release Noteshttps://github.com/bytebase/bytebase/releases/tag/3.16.0release-notes
• github.comhttps://github.com/bytebase/bytebase/blob/3.15.1/backend/api/v1/issue_service.go#L1116technical-description
• github.comhttps://github.com/bytebase/bytebaseproduct
• www.vulncheck.comVulnCheck Advisory: Bytebase before 3.16.0 Authorization Bypass via UpdateIssueCommenthttps://www.vulncheck.com/advisories/bytebase-before-3.16.0-authorization-bypass-via-updateissuecommentthird-party-advisory