CVE-2026-102785 yootheme.com CVE debrief

Who should care

Defenders responsible for Joomla installations with the YOOtheme Pro extension, particularly those with publicly accessible image transformation handlers, should assess exposure and prioritize patching or mitigation.

Why it matters

Defenders should prioritize verifying exposure of YOOtheme Pro extension for Joomla versions 5.0.0-5.0.52 and applying patches or mitigations as available due to the critical severity and potential for unauthenticated remote code execution.

• Potential unauthenticated remote code execution
• Possible traversal out of intended cache directory
• Writing of attacker-controlled PNG/PHP polyglot to executable public media directory

Technical summary

The YOOtheme Pro extension for Joomla has an unauthenticated remote code execution vulnerability in versions 5.0.0-5.0.52. This vulnerability is due to incomplete binding of normalized image operations and output destination to request signature, allowing attackers to execute arbitrary code. Defenders should prioritize verifying exposure of YOOtheme Pro extension for Joomla versions 5.0.0-5.0.52 and applying patches or mitigations as available. The vulnerability allows for potential unauthenticated remote code execution, possible traversal out of intended cache directory, and writing of attacker-controlled PNG/PHP polyglot to executable public media directory.

Defensive priority

Defenders should prioritize verifying exposure of YOOtheme Pro extension for Joomla versions 5.0.0-5.0.52 and applying patches or mitigations as available.

Recommended defensive actions

• Verify YOOtheme Pro extension for Joomla version and check for exposure
• Apply patches or mitigations as available
• Monitor for potential exploitation attempts
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The CVE record and source item provide details on the unauthenticated remote code execution vulnerability in YOOtheme Pro 5.0.0-5.0.52. However, additional information on exploitation, impact, and remediation may be limited. Grounding in source-provided details, defenders should verify exposure and review official advisories for affected scope, severity, and vendor guidance.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.