CVE-2026-53500

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CVSS 3.1

8.2 high

EPSS

<1%p21

Published

Jul 31, 2026 (Jul 31, 2026)

Modified

Sep 8, 2026

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.

Weakness: CWE-918
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

NVD CVE.org GitHub PoCs EPSS (0.3%)

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