CVE-2026-53505

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CVSS 3.1

7.5 high

EPSS

<1%p26

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, Thumbor's filters:proportion( ) filter does not enforce an upper bound on and runs in the post-transform phase. An attacker can trigger extremely large resizes (CPU/memory exhaustion) and cause denial of service. This issue is fixed in 7.8.0.

Weakness: CWE-400
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.3%)

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