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Fencer Vulns
high 7.5

CVE-2024-3574 json

Authorization Header Leak During Cross-Domain Redirect in scrapy/scrapy

published 2024-02-15 2 y ago modified 2026-07-07 4 mo ago also GHSA-cw9j-q3vf-hrrv , PYSEC-2026-1908 , EUVD-2024-0622

cvss
7.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits
0
none known

Summary

In scrapy version 2.10.1, an issue was identified where the Authorization header, containing credentials for server authentication, is leaked to a third-party site during a cross-domain redirect. This vulnerability arises from the failure to remove the Authorization header when redirecting across domains. The exposure of the Authorization header to unauthorized actors could potentially allow for account hijacking.

Patch / fix

  • pypi scrapy 1.8.4, 2.11.1
  • scrapy scrapy/scrapy 2.11.1
  • scrapy scrapy 2.11.1
  • python-scrapy Debian 14, Debian 13 2.11.1-1

debian advisories DEBIAN-CVE-2024-3574

  • python-scrapy Ubuntu Pro 18.04 LTS 1.5.0-1ubuntu0.1~esm1
  • python-scrapy Ubuntu Pro 20.04 LTS 1.7.3-1ubuntu0.1~esm1
  • python-scrapy Ubuntu Pro 22.04 LTS 2.5.1-2ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2024-3574

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • huntr.com https://huntr.com/bounties/49974321-2718-43e3-a152-62b16eed72a9 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
pypi scrapy
>=2, <2.11.1
<1.8.4
2.11.1
1.8.4

Affected products

  • scrapy scrapy/scrapy
  • scrapy scrapy

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.