CVE-2026-53505

Published: Jul 31, 2026Modified: Sep 8, 2026Deferred

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: security-advisories@github.com (Secondary)

Description

Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor's filters:proportion(<value>) filter does not enforce an upper bound on <value> 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.

Related CWEs

CWE-400

Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

References (3)

https://github.com/thumbor/thumbor/commit/2c716119de986cfc68c7071af52a98187e006023

Source: security-advisories@github.com

https://github.com/thumbor/thumbor/releases/tag/7.8.0

Source: security-advisories@github.com

https://github.com/thumbor/thumbor/security/advisories/GHSA-phj3-59pf-cp83

Source: security-advisories@github.com

Timeline

No history available yet.