CVE-2026-8853Disclosure

LOWCVSS 4.4 · MEDIUM

Exploit discussion active in current signal (3 latest mentions)

Immediate actions

Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft
Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

The MW WP Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'memo' parameter in all versions up to, and including, 5.1.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Because the memo value is stored via update_post_meta() rather than wp_insert_post(), WordPress's built-in kses and unfiltered_html protections do not apply, allowing attackers to break out of the textarea element via injected closing tags regardless of role-based content filtering.

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1.5/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-79

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Threat summary

Public PoC is present in monitored signal
3 mentions across 1 observed day

What's happening

PoC mentioned or linked in 1 signal
Technical details provided in 3 signals
Disclosure: 2 classified signals
3 total mentions across 1 day

Deep dive

Activity timeline3 mentions / 1d

Signal classification2 categories

Disclosure

266.7%

PoC

133.3%

Referenced assets3 URLs

By indicator

Full discourse3 posts

Atomic Edge@atomicedgeWAF137d
PoC
https://atomicedge.io/cve-proof/cve-2026-8853-mw-wp-form-version-5-1-3-medium-vulnerability-proof-of-concept CVE-2026-8853 mw-wp-form (CVSS Score 4.4) #WordPress plugin #vulnerability #cybersecurity #wordpressfirewall #wordpresssecurity #hacking #wpsecurity #atomicedge
Post summary
The post shares a proof‑of‑concept for CVE‑2026‑8853 affecting the WordPress mw‑wp‑form plugin, highlighting a medium‑severity vulnerability (CVSS 4.4) without indicating active exploitation, patches, or false‑positive status.
0000037
7 followersView on X
Infoflowcloud@infoflowcloud137d
Disclosure
🚨*CVE* CVE-2026-8853 The MW WP Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'memo' parameter in all versions up to, and including, 5.1.3 due to insufficien… https://www.cve.org/CVERecord?id=CVE-2026-8853 ----- Traducción: CVE-2026-8853 El … http://infoflow.cloud`
Post summary
The post announces CVE‑2026‑8853, a stored XSS vulnerability in MW WP Form up to version 5.1.3, without mentioning PoC, exploitation, or patches.
0000026
79 followersView on X
CVE@CVEnew137d
Disclosure
CVE-2026-8853 The MW WP Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'memo' parameter in all versions up to, and including, 5.1.3 due to insufficien… https://www.cve.org/CVERecord?id=CVE-2026-8853
Post summary
The text announces a stored XSS flaw in MW WP Form (v5.1.3 and earlier) via the memo field, without mentioning exploitation evidence or remediation.
00000143
57.6K followersView on X

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