Vulnerability · Published Mar 28, 2026 · Assigned by VulDB

CVE-2026-4995wandb OpenUI Window Message Event index.html cross site scripting

Low 3.5

In plain English

A low-severity cross-site scripting in OpenUI from wandb. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).

Severity (CVSS 3.1)3.5Low

Exploit odds (30 days)0.2%top 90.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was determined in wandb OpenUI up to 1.0. Affected by this vulnerability is an unknown functionality of the file frontend/public/annotator/index.html of the component Window Message Event Handler. This manipulation causes cross site scripting. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
wandb	OpenUI	1.0

Weakness: CWE-79, CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

References

VDB-353882 | wandb OpenUI Window Message Event index.html cross site scripting vdb-entry
VDB-353882 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #778267 | Weights and Biases OpenUI <= 1.0 (commit f9d8f0e) Cross-Site Scripting (CWE-79) third-party-advisory
https://gist.github.com/YLChen-007/899f210b2d78e163d13561bb7f49b4da exploit