Grav: Unauthenticated denial of service via unbounded image derivative dimensions

Summary An unauthenticated visitor exhausts server memory and CPU by requesting an image with oversized resize dimensions. One request drives a worker to several gigabytes of RAM and tens of seconds of CPU. A few concurrent requests take the host down. Details Grav::fallbackUrl...

PYSEC-2026-3621 Thumbor proportion filter allows unbounded post-transform resize leading to remote DoS

Summary 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. Details - Filter implementation: thumbor/filters/proportion.py - value is parsed ...

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

SummaryThumbor'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. Details- Filter implementation: thumbor/filters/proportion.py - value is parsed as...

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...

GHSA-PHJ3-59PF-CP83 Thumbor proportion filter allows unbounded post-transform resize leading to remote DoS

Summary 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. Details - Filter implementation: thumbor/filters/proportion.py - value is parsed ...

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

Summary 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. Details - Filter implementation: thumbor/filters/proportion.py - value is parsed ...

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...

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...

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...