CVE-2026-53505

NameCVE-2026-53505
DescriptionThumbor 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
thumbor (PTS)forky, sid7.8.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
thumborsource(unstable)7.8.0-1

Notes

https://github.com/thumbor/thumbor/security/advisories/GHSA-phj3-59pf-cp83
Fixed by: https://github.com/thumbor/thumbor/commit/2c716119de986cfc68c7071af52a98187e006023 (7.8.0)

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