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  4. CVE 2026 81784 wordpress wise chat plugin 342 php object
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Back to active CVEs
High · CVSS 8.1CVE-2026-81784

WordPress Wise Chat plugin <= 3.4.2 - PHP Object Injection vulnerabilityCVE-2026-81784

Answer in brief

CVE-2026-81784 records a High severity (CVSS 8.1) vulnerability in WordPress Wise Chat plugin <= 3.4.2 - PHP Object Injection vulnerability. The current sources do not mark it as known exploited. The current feed maps Marcin/wise-chat (generic), Marcin/wise-chat (generic), Marcin/Wise Chat (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 10, 2026Updated Oct 6, 2026Source checked Oct 6, 2026First seen by HOL Sep 10, 2026Material review Oct 6, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.1
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 8.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Marcin/wise-chat (generic), Marcin/wise-chat (generic), Marcin/Wise Chat (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Marcin/wise-chatgeneric>=0 <=3.4.2Not reported
Marcin/wise-chatgeneric>=n/a <=3.4Not reported
Marcin/Wise Chatgenericn/aNot reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Marcin/wise-chat, Marcin/wise-chat, Marcin/Wise Chat.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Sep 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 10, 2026

Sources and claim methodology

  • Source referencepatchstack.com
Upstream source description

Deserialization of Untrusted Data vulnerability in Marcin Wise Chat wise-chat allows Object Injection.This issue affects Wise Chat: from n/a through 3.4.2.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Insecure deserialization in the TrueLayer Magento 2 pluginAlso CWE-502
  • Authenticated RCE via render-components Entry Type overridesSame generic ecosystem
  • Heap Buffer Overflow in GNU Aspell's prezip utilitySame generic ecosystem
  • Out-of-bounds Read in GNU AspellSame generic ecosystem
  • Integer Truncation Leading to Heap Corruption in GNU AspellSame generic ecosystem
  • Open Redirect in PingGateway Fragment FilterSame generic ecosystem

Record context

Vulnerability class
Deserialization
EPSS
Not reported
CWE IDs
CWE-502
Source
CVE List V5
Source checked
Oct 6, 2026
References
1 linked source
Open source record