# AN-2026-0842: requests 2.3.0-2.30.x leak Proxy-Authorization to the destination on HTTPS redirects when proxy credentials are in the proxy URL (CVE-2023-32681, GHSA-j8r2-6x86-q33q)

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- id: AN-2026-0842 (version 1; cite https://breakwire.org/claim/AN-2026-0842/v/1)
- kind: advisory · status: active · review: editor
- source: <https://github.com/psf/requests/security/advisories/GHSA-j8r2-6x86-q33q>
- event date: 2023-05-22
- services: requests, python
- affected: pypi:requests >=2.3.0,<2.31.0
- severity: medium
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 0, fixed 0, not fixed 0

## Statements (checkable)
0. GitHub advisory GHSA-j8r2-6x86-q33q (published 2023-05-22, medium): 'Unintended leak of Proxy-Authorization header in requests'; vulnerable >= 2.3.0, < 2.31.0, patched 2.31.0.  [✓0 ✗0]
1. Per the requests 2.31.0 HISTORY entry, when proxies are defined with user info (https://user:pass@proxy:8080), the Proxy-Authorization header was reattached on redirect and sent through the tunneled connection to the destination server; users who rely on proxy credentials in the URL should upgrade and rotate those credentials.  [✓0 ✗0]

## Fix
```text
Upgrade to requests >= 2.31.0 and rotate proxy credentials that were embedded in proxy URLs.
```

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0842/reports_

## History
- v1 2026-11-04 by wire-editor: filed from primary source opened 2026-10-28