CVE-2026-81783

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-10. a secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

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

Subscriber Broken Authentication in MailMunch – Grow your Email List <= 3.2.5 versions.

CVSS v3
7.1
EG Score
7.1(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
Severity71% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
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

Broken Authentication in WordPress MailMunch – Grow your Email List Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/mailmunch/vulnerability/wordpress-mailmunch-grow-your-email-list-plugin-3-2-5-broken-authentication-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-81783(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 28× in last 7d / 40× 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. 2026-09-19 17:28 UTCEG score recompute
  2. 2026-09-19 17:28 UTCGHSA enrichment
  3. 2026-09-19 06:04 UTCEG score recompute
  4. 2026-09-19 06:04 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 18:39 UTCGHSA enrichment
  7. 2026-09-18 07:14 UTCGHSA enrichment
  8. 2026-09-17 19:50 UTCEG score recompute
  9. 2026-09-17 19:49 UTCGHSA enrichment
  10. 2026-09-17 07:43 UTCGHSA enrichment
  11. 2026-09-16 20:18 UTCEG score recompute
  12. 2026-09-16 20:18 UTCGHSA enrichment
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-16 08:53 UTCEG score recompute
  15. 2026-09-16 08:52 UTCGHSA enrichment
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-15 21:26 UTCGHSA enrichment
  18. 2026-09-15 10:01 UTCEG score recompute
  19. 2026-09-15 10:01 UTCGHSA enrichment
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-15 03:12 UTCEPSS rescore
  22. 2026-09-14 22:37 UTCGHSA enrichment
  23. 2026-09-14 11:13 UTCGHSA enrichment
  24. 2026-09-13 23:49 UTCEG score recompute
  25. 2026-09-13 23:49 UTCGHSA enrichment
Show 15 more
  1. 2026-09-13 12:25 UTCGHSA enrichment
  2. 2026-09-13 01:01 UTCEG score recompute
  3. 2026-09-13 01:01 UTCGHSA enrichment
  4. 2026-09-12 13:37 UTCGHSA enrichment
  5. 2026-09-12 02:12 UTCEG score recompute
  6. 2026-09-12 02:12 UTCGHSA enrichment
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 14:53 UTCEPSS rescore
  9. 2026-09-11 14:47 UTCGHSA enrichment
  10. 2026-09-11 03:22 UTCGHSA enrichment
  11. 2026-09-10 15:57 UTCEG score recompute
  12. 2026-09-10 15:57 UTCGHSA enrichment
  13. 2026-09-10 15:21 UTCEG score recompute
  14. 2026-09-10 14:35 UTCEG score recompute
  15. 2026-09-10 14:35 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-81783?
CVE-2026-81783 is a high vulnerability published on September 10, 2026. Subscriber Broken Authentication in MailMunch – Grow your Email List <= 3.2.5 versions.
When was CVE-2026-81783 disclosed?
CVE-2026-81783 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-2026-81783 actively exploited?
CVE-2026-81783 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 85.6% of all scored CVEs.
What is the CVSS score of CVE-2026-81783?
CVE-2026-81783 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-81783?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-81783, 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-2026-81783

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