Is CVE-2026-103277 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-103277?

CVE-2026-103277 has a CVSS v3 severity of HIGH (8.1).

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CVE-2026-103277

Description

Ghost versions from 2.5.0 before 6.34.0 contain an untrusted script execution vulnerability in the oEmbed preview feature that fails to sandbox externally hosted scripts. Attackers can craft malicious oEmbed content to execute scripts in the context of a staff user's admin session, potentially compromising administrative access.