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.
Severity (CVSS)
| Base score | 7.5 |
|---|---|
| Severity | High |
| Version | CVSS 3.1 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Provided by | CNA |
Weaknesses
- CWE-400 — CWE-400: Uncontrolled Resource Consumption
Affected products
| Vendor | Product | Versions |
|---|---|---|
| thumbor | thumbor | < 7.8.0 |
References
- https://github.com/thumbor/thumbor/security/advisories/GHSA-phj3-59pf-cp83 (x_refsource_CONFIRM)
- https://github.com/thumbor/thumbor/commit/2c716119de986cfc68c7071af52a98187e006023 (x_refsource_MISC)
- https://github.com/thumbor/thumbor/releases/tag/7.8.0 (x_refsource_MISC)
Generated from the official CVE List on 01 Aug 2026 07:04 UTC.