Vulnerability Description
Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, the convolution filter regular expression performs exponential backtracking on crafted repeated numeric input, allowing a URL request to exhaust processing time. This issue is fixed in 7.8.0.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/thumbor/thumbor/commit/3f38fe1610d20168e91f76d432212de30727eb
- https://github.com/thumbor/thumbor/releases/tag/7.8.0
- https://github.com/thumbor/thumbor/security/advisories/GHSA-5vjc-7cxw-4w6j
- https://github.com/thumbor/thumbor/security/advisories/GHSA-5vjc-7cxw-4w6j
FAQ
What is CVE-2026-53504?
CVE-2026-53504 is a vulnerability with a CVSS score of 7.5 (HIGH). Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, the convolution filter regular expression performs exponential backtracking on crafted repeated numeric input, allowing ...
How severe is CVE-2026-53504?
CVE-2026-53504 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-53504?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.