Vulnerability · Published Mar 27, 2026 · Assigned by VulDB

CVE-2026-4992wandb OpenUI HTMLAnnotator server.py get_share HTML injection

Medium 4.3

In plain English

A medium-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 0.3% (higher than 28% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.3%top 72.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A flaw has been found in wandb OpenUI up to 1.0. This affects the function create_share/get_share of the file backend/openui/server.py of the component HTMLAnnotator Component. Executing a manipulation of the argument ID can lead to HTML injection. The attack may be performed from remote. The exploit has been published and may be used. 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:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

References

VDB-353879 | wandb OpenUI HTMLAnnotator server.py get_share HTML injection vdb-entry, technical-description
VDB-353879 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #778264 | Weights and Biases OpenUI <= 1.0 (commit f9d8f0e) Cross-Site Scripting (CWE-79) third-party-advisory
https://gist.github.com/YLChen-007/7b42be1da37af51a0cfba0866d100987 exploit