CVE-2025-6176High· 7.5▾ TwilightScrapy are vulnerable to a denial of service (DoS) attack due to a flaw in its brotli decompression implementation. The protection mechanism against decompression bombs fails to mitigate the brotli variant, allowing remote servers to crash…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Exploit-prediction probability, daily snapshots since Aug 1.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.5%
0.5% → 0.5%
Last analysed / modified upstream
Scrapy are vulnerable to a denial of service (DoS) attack due to a flaw in its brotli decompression implementation. The protection mechanism against decompression bombs fails to mitigate the brotli variant, allowing remote servers to crash clients with less than 80GB of available memory. This occurs because brotli can achieve extremely high compression ratios for zero-filled data, leading to excessive memory consumption during decompression.
Scrapy: python-scrapy: brotli: Python brotli decompression bomb DoS — rated Important by Red Hat. Released 2025-10-31, updated 2026-10-09.
Affected:
Fixed:
No fix planned:
Not affected:
For OpenShift Container Platform 4.12 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:
https://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes
You may download the oc tool and use it to inspect release image metadata for x86_64 architecture. The image digest may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.
The sha value for the release is as follows:
(For x86_64 arc… https://access.redhat.com/errata/RHSA-2026:3861
Before applying this update, make sure all previously released errata relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:5971 For OpenShift Container Platform 4.13 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:
https://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html/release_notes
You may download the oc tool and use it to inspect release image metadata for x86_64 architecture. The image digest may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.
The sha value for the release is as follows:
(For x86_64 arc… https://access.redhat.com/errata/RHSA-2026:3415
Workarounds / mitigations:
Affected packages:
brotli < 1.2.0scrapy < 2.13.4Patched in:
brotli 1.2.0scrapy 2.13.4Connected by shared product, vendor, weakness, or advisory.
CVE-2022-23524High· 7.5helm: Denial of service through string value parsing (CVE-2022-23524)
CVE-2022-3064High· 7.5go-yaml: Improve heuristics preventing CPU/memory abuse by parsing malicious or large YAML documents (CVE-2022-3064)
CVE-2023-25153Medium· 5.5containerd: OCI image importer memory exhaustion (CVE-2023-25153)
CVE-2026-116141Medium· 5.3ImageMagick: ImageMagick: Denial of Service via policy bypass in UHDR decoder (CVE-2026-116141)
CVE-2026-115877Medium· 5.4twisted: Twisted: HTTP request smuggling via improper header delimiter handling (CVE-2026-115877)
CVE-2026-114140High· 7.8nbconvert: nbconvert: arbitrary file write via path traversal in ExtractOutputPreprocessor (CVE-2026-114140)