CVE-2023-326816.1MediumCWE-200

CVE-2023-32681: Unintended leak of Proxy-Authorization header in requests

psf · requests

Affected: psf requests · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

3.0%probability of exploitation in the next 30 days

87th percentile

050100

Higher than 87% of scored CVEs

6.1MediumCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

Requests is a HTTP library. Since Requests 2.3.0, Requests has been leaking Proxy-Authorization headers to destination servers when redirected to an HTTPS endpoint. This is a product of how we use `rebuild_proxies` to reattach the `Proxy-Authorization` header to requests. For HTTP connections sent through the tunnel, the proxy will identify the header in the request itself and remove it prior to forwarding to the destination server. However when sent over HTTPS, the `Proxy-Authorization` header must be sent in the CONNECT request as the proxy has no visibility into the tunneled request. This results in Requests forwarding proxy credentials to the destination server unintentionally, allowing a malicious actor to potentially exfiltrate sensitive information. This issue has been patched in version 2.31.0.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

psf · requests>= 2.3.0, < 2.31.0

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Information Exposure · Information Disclosure
Vendor: psf
Published: May 2023
Band: Possible (1 to 10%), May 2023

CoverageNo articles yet

No CyberSIXT article names CVE-2023-32681 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.