GHSA-8vm4-g489-v3w7 — medium GitHub Advisory (CVE-2026-28398) in npm/nocodb

Description

Summary

User-controlled content in comments and rich text cells was rendered via v-html without sanitization, enabling stored XSS.

Details

Comments in Comments.vue and rich text in TextArea.vue were parsed by markdown-it with html: true and injected via v-html. The codebase had vue-dompurify-html available but these paths used raw v-html. Server-side, Comment.insert() used extractProps() instead of extractPropsAndSanitize().

Commenter role is sufficient for the comments vector; Editor role for rich text.

This issue was independently reported; see also GHSA-rcph-x7mj-54mm and GHSA-wwp2-x4rj-j8rm for the same root cause found by GitHub Security Lab.

Impact

Stored XSS — malicious scripts execute for any user viewing the comment or cell.

Credit

This issue was reported by @bugbunny-research (bugbunny.ai).

Basic information

Type: reviewed
Severity: medium
Advisory on GitHub: Open advisory ↗
Repository advisory: Open repository advisory ↗
Source code: Browse source ↗
Published (advisory): 2026-03-03 20:58:44 UTC
Updated: 2026-03-03 20:58:45 UTC
GitHub reviewed: 2026-03-03 20:58:44 UTC
NVD published: 2026-03-02

Score	Percentile
0.03%	10.30%

CVSS Scores

Base score	Version	Severity	Vector
5.3	4.0	—	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network. Attack complexity (AC:L) Exploitation conditions are straightforward and stable. Attack requirements (AT:N) No additional preconditions are required beyond normal reachability. Privileges required (PR:N) No privileges are required. User interaction (UI:P) A user has to participate (for example click/open/approve). Vulnerable system confidentiality impact (VC:N) No confidentiality impact on the vulnerable system. Vulnerable system integrity impact (VI:N) No integrity impact on the vulnerable system. Vulnerable system availability impact (VA:N) No availability impact on the vulnerable system. Subsequent system confidentiality impact (SC:L) Limited confidentiality impact on subsequent systems. Subsequent system integrity impact (SI:L) Limited integrity impact on subsequent systems. Subsequent system availability impact (SA:N) No availability impact on subsequent systems.

Identifiers

Type	Value
GHSA	GHSA-8vm4-g489-v3w7 ↗
CVE	CVE-2026-28398 ↗

CWEs

CWE id	Name
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Credits

bugbunny-research (reporter)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem	Package	Vulnerable range	First patched	Vulnerable functions
npm	nocodb	<= 0.301.2	0.301.3	—

NocoDB Vulnerable to Stored Cross-Site Scripting via Comments and Rich Text Cells