# CVE-2024-3574: Authorization Header Leak During Cross-Domain Redirect in scrapy/scrapy

> Attackers can steal Authorization headers via cross-domain redirects in Scrapy, potentially leading to account hijacking.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 16 Apr 2024
- **Updated:** 1 Aug 2024
- **Also known as:** DEBIAN-CVE-2024-3574, GHSA-cw9j-q3vf-hrrv, PYSEC-2026-1908, UBUNTU-CVE-2024-3574

## What is CVE-2024-3574?

CVE-2024-3574 is a high-severity vulnerability in scrapy/scrapy, published on 16 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

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.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2024-3574?

5 open source packages ship an affected version, including scrapy. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `scrapy` | PyPI | All versions | 1.8.4, 2.11.1 |
| `scrapy` | PyPI | All versions | 1.8.4 |
| `scrapy` | PyPI | All versions | 1.8.4 |
| `scrapy` | PyPI | From 2 | 2.11.1 |
| `scrapy` | PyPI | From 2 | 2.11.1 |

Products: Scrapy Scrapy.

## How do I fix CVE-2024-3574?

Upgrade scrapy to a fixed version for your release line: 1.8.4 or 2.11.1.

## Is CVE-2024-3574 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-3574 exists.

## Other vulnerabilities in scrapy/scrapy

- [CVE-2024-1968](https://insights.sbomify.com/CVE-2024-1968/): Authorization Header Leakage in scrapy/scrapy on Scheme Change Redirects (high 7.5)
- [CVE-2024-3572](https://insights.sbomify.com/CVE-2024-3572/): XML External Entity (XXE) Vulnerability in scrapy/scrapy (high 7.5)
- [CVE-2024-1892](https://insights.sbomify.com/CVE-2024-1892/): ReDoS Vulnerability in scrapy/scrapy's XMLFeedSpider (high 7.5)
- [CVE-2017-14158](https://insights.sbomify.com/CVE-2017-14158/): Scrapy denial of service vulnerability (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-3574 and fix it if it is affected.

What it is: CVE-2024-3574 is a high-severity vulnerability in scrapy/scrapy, published on 16 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-3574 exists.

Affected packages and fixed versions:
- scrapy (PyPI): affected all versions; fixed in 1.8.4, 2.11.1
- scrapy (PyPI): affected all versions; fixed in 1.8.4
- scrapy (PyPI): affected all versions; fixed in 1.8.4
- scrapy (PyPI): affected from 2; fixed in 2.11.1
- scrapy (PyPI): affected from 2; fixed in 2.11.1

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-3574/ (Markdown: https://insights.sbomify.com/CVE-2024-3574/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-3574
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-3574
- OSV: https://osv.dev/vulnerability/CVE-2024-3574

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-3574/
Summaries are generated and may contain mistakes; the official description above is the record.