Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-115321— Bytebase before 3.16.0 Authorization Bypass via UpdateIssueComment

Quick assessment

Affected
bytebase bytebase
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

3.16.0 之前的 Bytebase 版本在 处理程序中存在授权绕过漏洞。该漏洞允许低权限的项目用户通过提供其他项目的评论唯一标识符（UID），修改其他项目中的评论。任何拥有项目角色（包括“项目查看者”）的攻击者，均可将自身项目中的问题设置为父级，并引用其他项目的评论 UID，从而覆盖其本无权访问的评论。

CVSS 4.3 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
bytebase bytebase < 3.16.0 affected
3.16.0 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-115321

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Bytebase before 3.16.0 Authorization Bypass via UpdateIssueComment
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
bytebase bytebase 0 ~ 3.16.0 -

II. Public POCs for CVE-2026-115321

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-115321

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-115321 (2)

Vendor Advisories for CVE-2026-115321 (1)

Vendor Pages for CVE-2026-115321 (2)

Other References for CVE-2026-115321 (1)

Same Patch Batch · bytebase · 2026-10-22 · 3 CVEs total

CVE-2022-51026 9.8 CRITICAL Bytebase 0.12.0 before 1.0.1 Authentication Bypass via GitLab Self-Hosted Login
CVE-2026-115322 4.3 MEDIUM Bytebase before 3.16.0 Authorization Bypass via Rollout Service Task Run Handlers

IV. Related Vulnerabilities

Same product: bytebase
Same vendor: bytebase
Same weakness: CWE-639

V. Comments for CVE-2026-115321

No comments yet

Leave a comment