GHSA-2qfp-q593-8484

Suggest an improvement
Source
https://github.com/advisories/GHSA-2qfp-q593-8484
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/10/GHSA-2qfp-q593-8484/GHSA-2qfp-q593-8484.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-2qfp-q593-8484
Aliases
  • CVE-2025-6176
Related
Published
2025-10-31T00:30:35Z
Modified
2025-11-17T16:42:21.852810Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Scrapy is vulnerable to a denial of service (DoS) attack due to flaws in brotli decompression implementation
Details

Scrapy versions up to 2.13.3 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. Mitigation for this vulnerability needs security enhancement added in brotli v1.2.0.

Database specific 
{
    "github_reviewed": true,
    "github_reviewed_at": "2025-10-31T21:23:47Z",
    "nvd_published_at": "2025-10-31T00:15:37Z",
    "severity": "HIGH",
    "cwe_ids": [
        "CWE-400"
    ]
}
References

Affected packages

PyPI / brotli

Package

Name
brotli
View open source insights on deps.dev
Purl
pkg:pypi/brotli

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.2.0

Affected versions

0.*

0.5.2
0.6.0

1.*

1.0.1
1.0.4
1.0.6
1.0.7
1.0.8
1.0.9
1.1.0

Database specific

last_known_affected_version_range

"<= 1.1.0"

PyPI / scrapy

Package

Name
scrapy
View open source insights on deps.dev
Purl
pkg:pypi/scrapy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.13.4

Affected versions

0.*

0.7
0.8
0.9
0.10.4.2364
0.12.0.2550
0.14.1
0.14.2
0.14.3
0.14.4
0.16.0
0.16.1
0.16.2
0.16.3
0.16.4
0.16.5
0.18.0
0.18.1
0.18.2
0.18.3
0.18.4
0.20.0
0.20.1
0.20.2
0.22.0
0.22.1
0.22.2
0.24.0
0.24.1
0.24.2
0.24.3
0.24.4
0.24.5
0.24.6

1.*

1.0.0rc1
1.0.0rc2
1.0.0rc3
1.0.0
1.0.1
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.1.0rc1
1.1.0rc2
1.1.0rc3
1.1.0rc4
1.1.0
1.1.1
1.1.2
1.1.3
1.1.4
1.2.0
1.2.1
1.2.2
1.2.3
1.3.0
1.3.1
1.3.2
1.3.3
1.4.0
1.5.0
1.5.1
1.5.2
1.6.0
1.7.0
1.7.1
1.7.2
1.7.3
1.7.4
1.8.0
1.8.1
1.8.2
1.8.3
1.8.4

2.*

2.0.0
2.0.1
2.1.0
2.2.0
2.2.1
2.3.0
2.4.0
2.4.1
2.5.0
2.5.1
2.6.0
2.6.1
2.6.2
2.6.3
2.7.0
2.7.1
2.8.0
2.9.0
2.10.0
2.10.1
2.11.0
2.11.1
2.11.2
2.12.0
2.13.0
2.13.1
2.13.2
2.13.3

Database specific

last_known_affected_version_range

"<= 2.13.3"