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CVE-2024-37891 is an incorrect resource transfer between spheres vulnerability in urllib3, a Python HTTP client library. When an application manually supplies a Proxy-Authorization header without using urllib3's ProxyManager proxy support, urllib3 does not recognize the header as authentication material and, in affected versions, does not remove it when following a cross-origin redirect. The redirected request can therefore transmit proxy authentication credentials to another origin.
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A urllib3 vulnerability in which Proxy-Authorization credentials may be retained and forwarded during cross-origin redirects, potentially exposing proxy credentials to an unintended destination.
A urllib3 information-disclosure vulnerability in which Proxy-Authorization credentials may be forwarded during cross-origin redirects if the header is manually configured outside urllib3 ProxyManager support.
A moderate-severity vulnerability tracked as CVE-2024-37891, covered by a TuxCare CentOS 7 local security check. The supplied CVSS v3 vector indicates network attackability with low privileges required and high confidentiality impact.
A vulnerability listed as addressed by this Red Hat container-image update; no technical vulnerability details are provided in the content.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.