Vulnerability report

Exploitation Attempts Observed in the Wild High Confidence Not in CISA KEV

CVE-2026-102785

YOOtheme Pro extension for Joomla Remote Code Execution

Yootheme.com / YOOtheme Pro extension for Joomla · 5.0.0-5.0.52

Watch CVE-2026-102785 Browse KEV feed
Severity
CVSS 10.0 · Critical
Confidence
High
Exploit status
Exploitation Attempts Observed in the Wild
EPSS
0.8%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-102785 is an unauthenticated vulnerability affecting Yootheme.com YOOtheme Pro extension for Joomla. Joomla Extension - yootheme.com - Unauthenticated remote code execution in YOOtheme Pro 5.0.0-5.0.52 -...

Have exploitation attempts been observed?

Yes. Exploitation attempts have been reported for this vulnerability. Previdian lists it as a known exploited vulnerability. Also reported by third-party sources. Confidence is high.

Who is affected?

Yootheme.com / YOOtheme Pro extension for Joomla 5.0.0-5.0.52.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

YOOtheme Pro extension for Joomla Remote Code Execution

Joomla Extension - yootheme.com - Unauthenticated remote code execution in YOOtheme Pro 5.0.0-5.0.52 - YOOtheme Pro’s publicly accessible image transformation handler incompletely binds normalized image operations and the output destination to its request signature.

An unauthenticated remote attacker can reuse a signature disclosed in a legitimate public image URL, inject additional image operations, traverse out of the intended cache directory, and write an attacker-controlled PNG/PHP polyglot to an executable public media directory.

yootheme.com Affected
YOOtheme Pro extension for Joomla
5.0.0-5.0.52
Published
22 Oct 2026
Exploitation Attempts Reported
27 Oct 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

joomla php

CVE References

Exploitation evidence

Evidence of exploitation attempts

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploitation Attempts Observed in the Wild

Unit 42 Timely Threat Intel

Recorded 27 Oct 2026

A trusted third party reported exploitation attempts.

Proof of concept available

GitHub

Recorded 24 Oct 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
Unit 42 Timely Threat Intel First 2026-10-27 21:53 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v4.0

10.0 Critical

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y

EPSS

0.8%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Unrestricted Upload of File with Dangerous Type CWE-434

Recent mention · Unit 42 Timely Threat Intel

2026-10-26 (Monday): YOOtheme Pro CVE-2026-102785 Exploited to Deploy Webshells

2026-10-26 (Monday): YOOtheme Pro CVE-2026-102785 Exploited to Deploy Webshells AUTHORS: - Urvesh Thakkarm, Muhammet Algan REFERENCES: - https://www.linkedin.com/posts/we-observed-in-the-wild-exploitation-of-cve-ugcPost-7520592857615912960-bfno/ -...

Read full advisory

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

antid00t/CVE-2026-102785

github · Created 2026-10-24 00:19:23 UTC · 0 stars · AI assessment 84%

CVE-2026-102785 YOOtheme Pro 5.0.0-5.0.52 │ Unauthenticated RCE Mass Exploit & WAF Bypass

Timeline

From disclosure to observed exploitation attempts

  1. 21:53 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party report of exploitation attempts

  2. 02:20 UTC

    Added to the Previdian watchlist

    Pro and Enterprise Watch users had 3 days of early warning before Previdian confirmed it as a KEV.

  3. 00:19 UTC

    Public PoC available

    Public proof-of-concept code published

  4. 12:36 UTC

    CVE published

    Vulnerability disclosed publicly

  5. 16:46 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-102785

Sample API response 
{
  "cve_id": "CVE-2026-102785",
  "confidence": "High",
  "cvss_score": 10.0,
  "cvss_estimated": false,
  "epss_score": 0.00772,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}