Which products and versions are affected by CVE-2026-10823?

Affected: ymc-smart-filter (wordpress-plugin); YMC Filter. The full list is in the CVE brief.

Is CVE-2026-10823 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2026-10823 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2026-10823?

Public exploit code is available.

Is there a fix for CVE-2026-10823?

Fixed versions are available, including YMC Filter 3.11.3, ymc-smart-filter 3.11.3.

How urgently should CVE-2026-10823 be patched?

Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

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Vulnerability Intelligence

CVE-2026-10823

HighPublic exploit

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…

Published Jun 26, 2026 · Updated Aug 21, 2026 · Also known as 1753ce91-762e-4fb7-a164-ee5bc9dcd323, EUVD-2026-39624, GHSA-cxq8-qm2q-phgj

Key Facts

Patch immediately

CVE-2026-10823 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting ymc-smart-filter (wordpress-plugin), YMC Filter.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 1.5% probability of exploitation in the next 30 days.
Fixed versions are available, including YMC Filter 3.11.3, ymc-smart-filter 3.11.3.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

CVSS v3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS (30-day exploit likelihood)

1.5%

Higher than 74.2% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2026-10823 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Affected Products

3 affected entries in total

Product	Affected versions	Fixed in
ymc-smart-filterwordpress-plugin	See advisory	3.11.3
YMC Filter	See advisory	3.11.3

Patched Releases

YMC Filter

3.11.3

ymc-smart-filter

3.11.3

Timeline

Publicly disclosed
Jun 26, 2026
Last updated
Aug 21, 2026

Weakness Type

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

FAQ

Common Questions.

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.
Affected: ymc-smart-filter (wordpress-plugin); YMC Filter. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including YMC Filter 3.11.3, ymc-smart-filter 3.11.3.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

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