CVE-2026-53505

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 issu...

CVE-2026-53501

Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor’s HMAC validation can be bypassed due to the use of Python’s .replace when removing the signature from the URL before validation. Since .replace removes all occurrences of the substring, an attacker can insert...

CVE-2026-53504

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...

CVE-2026-53500

Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, the ALLOWEDSOURCES configuration passes plain strings to re.match without escaping dots, so a hostname differing at dot positions can match the allowlist. This issue is fixed in 7.8.0...

CVE-2026-53503

Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor's filters:convolution, , filter passes the user-controlled value to a C extension thumbor/ext/filters/convolution.c where it is used as a divisor for % and / without validating columns 0. When columns=0, the C...

CVE-2026-53502

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

CVE-2026-53502 Thumbor has path traversal via post-validation URL decoding bypass in file_loader

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

CVE-2026-53502 Thumbor has path traversal via post-validation URL decoding bypass in file_loader

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

CVE-2026-53502

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

CVE-2026-53502

Thumbor (open-source image thumbnail service by globo.com) is affected by a path traversal in file_loader prior to version 7.8.0. The issue occurs because file_loader decodes percent-encoded path segments after root-boundary validation, allowing traversal outside FILE_LOADER_ROOT_PATH via waterma...

EUVD-2026-51612

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

CVE-2026-53505

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 issu...

CVE-2026-53505

Thumbor (open-source photo thumbnail service by globo.com) is affected prior to version 7.8.0. The filters:proportion() function does not enforce an upper bound on and executes during the post-transform phase, enabling extremely large resizes that can exhaust CPU/memory and cause a denial of ser...

CVE-2026-53505 Thumbor proportion filter allows unbounded post-transform resize leading to remote DoS

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 issu...

EUVD-2026-51611

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 issu...

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 numeric input, allowing a URL request to exhaust processing time. This issue is fixed in 7.8.0...

CVE-2026-53504

Thumbor contains a Regex Denial of Service (ReDoS) vulnerability in the convolution filter that triggers exponential backtracking on crafted repeated numeric input. This affects versions prior to 7.8.0 and can cause a URL request to exhaust processing time. The issue is fixed in 7.8.0. Per the co...

CVE-2026-53504

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...

EUVD-2026-51610

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...

CVE-2026-53503

Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor's filters:convolution, , filter passes the user-controlled value to a C extension thumbor/ext/filters/convolution.c where it is used as a divisor for % and / without validating columns 0. When columns=0, the C...