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CVE-2026-103277highCWE-79

Ghost 2.5.0 before 6.34.0 Untrusted Script Execution via oEmbed

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.6epss 0.3%
exploitation probability
0.3%top 82% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
TryGhost · Ghost