CVE-2026-53500
HIGH
NVD
CVSS Score
8.2
Severity
HIGH
Published
Jul 31, 2026
Vendor
unknown
Description
Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, the ALLOWED_SOURCES configuration passes plain strings to re.match() without escaping dots, so a hostname differing at dot positions can match the allowlist. This issue is fixed in 7.8.0.