CVE-2026-105642 TryGhost CVE debrief

Who should care

Ghost administrators and developers should assess exposure and prioritize updating to version 6.67.0 or later. Staff users with bookmark card creation access should be aware of the potential risks and monitor for suspicious activity.

Why it matters

CVE-2026-105642 is a remote code execution vulnerability in Ghost that allows staff users to create bookmark cards for attacker-controlled websites, potentially leading to arbitrary command execution on the Ghost server. Defenders should prioritize patching to version 6.67.0 or later and monitor for suspicious bookmark card activity.

• Potential remote code execution on Ghost servers
• Possible unauthorized access to sensitive data
• Risk of lateral movement within the network
• Need for urgent patching to prevent exploitation

Technical summary

A vulnerability in the image processing library bundled with Ghost allows any staff user, including Contributors, to create a bookmark card for an attacker-controlled website, resulting in arbitrary commands being run on the Ghost server. The vulnerability is present in Ghost from v6.56.0 up to v6.65.0 and is fixed in v6.67.0. This issue has a high impact on Ghost administrators and developers, who should assess exposure and prioritize updating to version 6.67.0 or later. Staff users with bookmark card creation access should be aware of the potential risks and monitor for suspicious activity.

Defensive priority

High priority for Ghost administrators and developers

Recommended defensive actions

• Update Ghost to version 6.67.0 or later
• Review and limit staff user access to bookmark card creation
• Monitor for suspicious bookmark card activity
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on a remote code execution vulnerability in Ghost via bookmark card images. The vulnerability is present in Ghost from v6.56.0 up to v6.65.0 and is fixed in v6.67.0.

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.