CVE-2026-53502

Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, file_loader decodes percent-encoded path segments after its root-boundary validation, allowing traversal outside FILE_LOADER_ROOT_PATH through watermark or frame filter input. This issue is fixed in 7.8.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/thumbor/thumbor/commit/3b986d13677b30fe6651c8c72ebb25957ac0a40d
https://github.com/thumbor/thumbor/releases/tag/7.8.0
https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h
https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h

Configurations

No configuration.

History

31 Jul 2026, 20:16

Type	Values Removed	Values Added
References	~~() https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h -~~	() https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h -

31 Jul 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-31 19:17

Updated : 2026-07-31 20:16

NVD link : CVE-2026-53502

Mitre link : CVE-2026-53502

CVE.ORG link : CVE-2026-53502

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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