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CVE-2017-14158

Scrapy denial of service vulnerability

7.5 High

Scrapy 1.4 allows remote attackers to cause a denial of service (memory consumption) via large files because arbitrarily many files are read into memory, which is especially problematic if the files are then individually written in a separate thread to a slow storage resource, as demonstrated by interaction between dataReceived (in core/downloader/handlers/http11.py) and S3FilesStore.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

2.60%Up 1.6 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.5

Scrapy 1.4 allows remote attackers to cause a denial of service (memory consumption) via large files because arbitrarily many files are read into memory, which is especially problematic if the files are then individually written in a separate thread to a slow storage resource, as demonstrated by interaction between dataReceived (in core/downloader/handlers/http11.py) and S3FilesStore.

Record
CVE-2017-14158
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
7.8 HighAV:N/AC:L/Au:N/C:N/I:N/A:C
Weakness
CWE-400
Updated
2026-11-02
CVE List No score

Scrapy 1.4 allows remote attackers to cause a denial of service (memory consumption) via large files because arbitrarily many files are read into memory, which is especially problematic if the files are then individually written in a separate thread to a slow storage resource, as demonstrated by interaction between dataReceived (in core/downloader/handlers/http11.py) and S3FilesStore.

Record
CVE-2017-14158
Updated
2026-11-02
EUVDEUVD-2017-0128 No score

Scrapy 1.4 allows remote attackers to cause a denial of service (memory consumption) via large files because arbitrarily many files are read into memory, which is especially problematic if the files are then individually written in a separate thread to a slow storage resource, as demonstrated by interaction between dataReceived (in core/downloader/handlers/http11.py) and S3FilesStore.

Record
EUVD-2017-0128
Updated
2026-11-03
GitHub AdvisoriesGHSA-h7wm-ph43-c39p 7.5

Scrapy denial of service vulnerability

Scrapy 1.4 allows remote attackers to cause a denial of service (memory consumption) via large files because arbitrarily many files are read into memory, which is especially problematic if the files are then individually written in a separate thread to a slow storage resource, as demonstrated by interaction between dataReceived (in core/downloader/handlers/http11.py) and S3FilesStore.

Record
GHSA-h7wm-ph43-c39p
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-400
Updated
2026-11-02
OSV 7.5

Scrapy 1.4 allows remote attackers to cause a denial of service (memory consumption) via large files because arbitrarily many files are read into memory, which is especially problematic if the files are then individually written in a separate thread to a slow storage resource, as demonstrated by interaction between dataReceived (in core/downloader/handlers/http11.py) and S3FilesStore.

Record
CVE-2017-14158
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2017-14158 7.5

Scrapy 1.4 allows remote attackers to cause a denial of service (memory consumption) via large files because arbitrarily many files are read into memory, which is especially problematic if the files are then individually written in a separate thread to a slow storage resource, as demonstrated by interaction between dataReceived (in core/downloader/handlers/http11.py) and S3FilesStore.

Record
DEBIAN-CVE-2017-14158
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVGHSA-h7wm-ph43-c39p 7.5

Scrapy denial of service vulnerability

Scrapy 1.4 allows remote attackers to cause a denial of service (memory consumption) via large files because arbitrarily many files are read into memory, which is especially problematic if the files are then individually written in a separate thread to a slow storage resource, as demonstrated by interaction between dataReceived (in core/downloader/handlers/http11.py) and S3FilesStore.

Record
GHSA-h7wm-ph43-c39p
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-400
Updated
2026-11-02
OSVUBUNTU-CVE-2017-14158 7.5

Scrapy 1.4 allows remote attackers to cause a denial of service (memory consumption) via large files because arbitrarily many files are read into memory, which is especially problematic if the files are then individually written in a separate thread to a slow storage resource, as demonstrated by interaction between dataReceived (in core/downloader/handlers/http11.py) and S3FilesStore.

Record
UBUNTU-CVE-2017-14158
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVPYSEC-2017-83 No score

Scrapy 1.4 allows remote attackers to cause a denial of service (memory consumption) via large files because arbitrarily many files are read into memory, which is especially problematic if the files are then individually written in a separate thread to a slow storage resource, as demonstrated by interaction between dataReceived (in core/downloader/handlers/http11.py) and S3FilesStore.

Record
PYSEC-2017-83
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
scrapy
PyPI
0.7 to 2.15.2 None known
python-scrapy
Debian:12
All versions, plus listed versions
2.10.0-12.11.0-12.11.0-22.11.1-12.11.1-2
Show 22 moreShow less
2.11.2-12.11.2-22.11.2-32.12.0-12.12.0-22.13.1-1~exp12.13.3-12.13.3-1~exp12.13.4-12.13.4-22.14.0-12.14.1-12.14.2-12.15.1-12.16.0-12.16.0-22.17.0-12.18.0-12.8.0-22.9.0-12.9.0-1~exp12.9.0-2
None known
python-scrapy
Debian:13
All versions, plus listed versions
2.12.0-22.13.1-1~exp12.13.3-12.13.3-1~exp12.13.4-1
Show 9 moreShow less
2.13.4-22.14.0-12.14.1-12.14.2-12.15.1-12.16.0-12.16.0-22.17.0-12.18.0-1
None known
python-scrapy
Debian:14
All versions, plus listed versions
2.12.0-22.13.1-1~exp12.13.3-12.13.3-1~exp12.13.4-1
Show 9 moreShow less
2.13.4-22.14.0-12.14.1-12.14.2-12.15.1-12.16.0-12.16.0-22.17.0-12.18.0-1
None known
scrapy
PyPI
0.7 to 2.15.2, plus listed versions
0.10.4.23640.12.0.25500.14.10.14.20.14.3
Show 45 moreShow less
0.14.40.16.00.16.10.16.20.16.30.16.40.16.50.18.00.18.10.18.20.18.30.18.40.20.00.20.10.20.20.22.00.22.10.22.20.24.00.24.10.24.20.24.30.24.40.24.50.24.60.80.91.0.01.0.0rc11.0.0rc21.0.0rc31.0.11.0.21.0.31.0.41.0.51.0.61.0.71.1.01.1.0rc11.1.0rc21.1.0rc31.1.0rc41.1.11.1.2
None known
scrapy
PyPI
0.7 and later, plus listed versions
0.10.4.23640.12.0.25500.14.10.14.20.14.3
Show 45 moreShow less
0.14.40.16.00.16.10.16.20.16.30.16.40.16.50.18.00.18.10.18.20.18.30.18.40.20.00.20.10.20.20.22.00.22.10.22.20.24.00.24.10.24.20.24.30.24.40.24.50.24.60.80.91.0.01.0.0rc11.0.0rc21.0.0rc31.0.11.0.21.0.31.0.41.0.51.0.61.0.71.1.01.1.0rc11.1.0rc21.1.0rc31.1.0rc41.1.11.1.2
None known
python-scrapy
Ubuntu:16.04:LTS
All versions, plus listed versions
1.0.0-11.0.3-1
None known
python-scrapy
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
1.3.0-1~exp21.4.0-11.5.0-11.5.0-1ubuntu0.1~esm1
None known
python-scrapy
Ubuntu:Pro:20.04:LTS
All versions, plus listed versions
1.7.3-11.7.3-1ubuntu0.1~esm1
None known
python-scrapy
Ubuntu:Pro:22.04:LTS
All versions, plus listed versions
2.4.1-22.5.1-22.5.1-2ubuntu0.1~esm1
None known
Show 4 moreShow less
Affected packages
PackageAffectedFixed
python-scrapy
Ubuntu:Pro:24.04:LTS
All versions, plus listed versions
2.10.0-12.11.0-12.11.0-22.11.1-12.11.1-1ubuntu0.1~esm2
None known
python-scrapy
Ubuntu:25.10
All versions, plus listed versions
2.12.0-2
None known
python-scrapy
Ubuntu:26.10
All versions, plus listed versions
2.14.1-12.17.0-12.18.0-2
None known
python-scrapy
Ubuntu:26.04:LTS
All versions, plus listed versions
2.12.0-22.14.0-12.14.1-1
None known

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-14158 is a high vulnerability (CVSS 7.5) in Scrapy, published September 5, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.60%, the 85th percentile. No source names a fixed version.

References

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This page doesn't list everything

Left out here: 112 versions. The JSON record has them.

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