VulnSocial

CVE-2026-82845Patch

LOWCVSS 9.9 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

The Masteriyo LMS WordPress plugin before 3.4.1 does not prevent user-supplied values held as metadata from being deserialized when they are read back, allowing users with a minimal account to inject arbitrary PHP objects and, by way of a class shipped in a library bundled with the Masteriyo LMS WordPress plugin before 3.4.1, write and execute arbitrary code on the server. A weaker form of the same issue is reachable without an account and yields an arbitrary file write rather than code execution.

Back to dashboard
0.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-502

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-09-13); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-09-13: 1Mentions · 2026-09-14: 1Patch / Workaround · 2026-09-13: 1Technical Details · 2026-09-13: 1Technical Details · 2026-09-14: 109-1309-14
Signal classification2 categories
Patch
150.0%
Disclosure
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-09-131
Patch1
2026-09-141
Disclosure1
Full discourse2 posts
  • Ciberseguridad LATAM@CibersegLATAM
    Disclosure

    🚨 Falla crítica en plugin educativo de WordPress permite ejecución remota de código con cuenta básica CVE-2026-82845 expone servidores mediante deserialización insegura en Masteriyo LMS — la versión sin autenticación agrava… ¿Su empresa ya evaluó esto? https://ciberseguridadlatam.com/falla-critica-en-plugin-educativo-de-wordpress-permite-ejecucion-remota-de-codigo-con-cuenta-basica/?utm_source=x&utm_medium=social&utm_campaign=falla-critica-en-plugin&utm_content=post https://t.co/ijnDjOgXW2

    Post summary

    The tweet discloses a critical remote code execution flaw (CVE-2026-82845) in the WordPress Masteriyo LMS plugin caused by insecure deserialization, noting that a basic account can trigger the exploit and urging organizations to evaluate their exposure.

    020021.2K
    22.6K followersView on X
  • ADK Cyber@ADKCyber
    Patch

    CVE-2026-82845 (CVSS 9.9) impacts Masteriyo LMS WordPress plugin < 3.4.1. Update if in use. https://nvd.nist.gov/vuln/detail/CVE-2026-82845 via NVD Recent High CVSS #CyberSecurity #InfoSec #Vulnerability #AI #MachineLearning https://t.co/mh5E4fEogS

    Post summary

    CVE‑2026‑82845 is a high‑severity vulnerability (CVSS 9.9) affecting Masteriyo LMS WordPress plugin versions below 3.4.1, and users are urged to update immediately.

    0001058
    95 followersView on X

Explore more

Back to dashboard