CVE-2026-53502highCWE-22

CVE-2026-53502: falha de alta gravidade em thumbor

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

Publicada em

Seguir esta CVE+ Monitorar thumbor+ Monitorar thumbor

Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.

21Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 8.7epss 0.5%
Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, file_loader decodes percent-encoded path segments after its root-boundary validation, allowing traversal outside FILE_LOADER_ROOT_PATH through watermark or frame filter input. This issue is fixed in 7.8.0.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Produtos afetados
thumbor · thumbor
CVEs relacionadas — thumbor

No mesmo produto, das mais perigosas para as menos.

CVE-2026-53503HIGHThumbor convolution filter allows divide-by-zero in C extension leading to remote DoSEPSS 0.8%CVE-2026-53505HIGHThumbor proportion filter allows unbounded post-transform resize leading to remote DoSEPSS 0.6%CVE-2026-53504HIGHThumbor has Regex Denial of Service (ReDoS) in `convolution` filterEPSS 0.6%CVE-2026-53500HIGHThumbor treats ALLOWED_SOURCES string patterns as unescaped regex, allowing hostname bypass via wildcard dotEPSS 0.5%CVE-2026-53501HIGHThumbor has HMAC validation bypass via multiple .replace() calls when removing URL signatureEPSS 0.4%