CVE-2026-81784

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-10. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Unauthenticated PHP Object Injection in Wise Chat <= 3.4 versions.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

September 10, 2026

Last Modified

September 10, 2026

Advisory Details (1)

Auto-updated Sep 10, 2026
Patch available.
generic Patch Available

PHP Object Injection in WordPress Wise Chat Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/wise-chat/vulnerability/wordpress-wise-chat-plugin-3-4-php-object-injection-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-81784(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 27× in last 7d / 48× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-21 10:18 UTCGHSA enrichment
  2. 2026-09-20 22:15 UTCEG score recompute
  3. 2026-09-20 22:15 UTCGHSA enrichment
  4. 2026-09-20 20:16 UTCEPSS rescore
  5. 2026-09-20 10:12 UTCGHSA enrichment
  6. 2026-09-19 22:10 UTCEG score recompute
  7. 2026-09-19 22:09 UTCGHSA enrichment
  8. 2026-09-19 10:06 UTCGHSA enrichment
  9. 2026-09-18 22:03 UTCEG score recompute
  10. 2026-09-18 22:03 UTCGHSA enrichment
  11. 2026-09-18 19:28 UTCEPSS rescore
  12. 2026-09-18 10:01 UTCGHSA enrichment
  13. 2026-09-17 21:58 UTCEG score recompute
  14. 2026-09-17 21:58 UTCGHSA enrichment
  15. 2026-09-17 09:55 UTCGHSA enrichment
  16. 2026-09-16 21:52 UTCEG score recompute
  17. 2026-09-16 21:52 UTCGHSA enrichment
  18. 2026-09-16 14:08 UTCEPSS rescore
  19. 2026-09-16 09:50 UTCEG score recompute
  20. 2026-09-16 09:50 UTCGHSA enrichment
  21. 2026-09-16 05:15 UTCEPSS rescore
  22. 2026-09-15 21:47 UTCGHSA enrichment
  23. 2026-09-15 09:44 UTCEG score recompute
  24. 2026-09-15 09:44 UTCGHSA enrichment
  25. 2026-09-15 03:12 UTCEPSS rescore
Show 23 more
  1. 2026-09-15 03:12 UTCEPSS rescore
  2. 2026-09-14 21:41 UTCGHSA enrichment
  3. 2026-09-14 09:38 UTCGHSA enrichment
  4. 2026-09-13 21:36 UTCEG score recompute
  5. 2026-09-13 21:36 UTCGHSA enrichment
  6. 2026-09-13 09:34 UTCGHSA enrichment
  7. 2026-09-12 21:31 UTCEG score recompute
  8. 2026-09-12 21:31 UTCGHSA enrichment
  9. 2026-09-12 09:28 UTCGHSA enrichment
  10. 2026-09-11 21:25 UTCEG score recompute
  11. 2026-09-11 21:25 UTCGHSA enrichment
  12. 2026-09-11 14:53 UTCEPSS rescore
  13. 2026-09-11 14:53 UTCEPSS rescore
  14. 2026-09-11 09:22 UTCGHSA enrichment
  15. 2026-09-10 21:19 UTCEG score recompute
  16. 2026-09-10 21:19 UTCGHSA enrichment
  17. 2026-09-10 21:05 UTCEG score recompute
  18. 2026-09-10 21:05 UTCGHSA enrichment
  19. 2026-09-10 15:57 UTCEG score recompute
  20. 2026-09-10 15:57 UTCGHSA enrichment
  21. 2026-09-10 15:21 UTCEG score recompute
  22. 2026-09-10 14:35 UTCEG score recompute
  23. 2026-09-10 14:35 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81784?
CVE-2026-81784 is a high vulnerability published on September 10, 2026. Unauthenticated PHP Object Injection in Wise Chat <= 3.4 versions.
When was CVE-2026-81784 disclosed?
CVE-2026-81784 was first published in the National Vulnerability Database on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81784 actively exploited?
CVE-2026-81784 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 79.7% of all scored CVEs.
What is the CVSS score of CVE-2026-81784?
CVE-2026-81784 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-81784?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-81784, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-81784

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