CVE-2026-53504 — Thumbor has Regex Denial of Service (ReDoS) in `convolution` filter
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 n…
Published: 2026-07-31 · CVSS: 7.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7