CVE detail
CVE-2026-8927
When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against `proxyA` using Digest auth, a subsequent transfer routed through `proxyB` erroneously leaks the `Proxy-Authorization:` header intended solely for `proxyA`.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 16.1 · diversity 15.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 4
- within the 30d window
- Peak daily
- 3
- highest bucket
Evidence
Source links by recency
4 source links · newest first
- CVE-2026-8927 env-set cross-proxy Digest auth state leakMicrosoft MSRC
Information published.
vendormsrc.microsoft.comJul 9, 2026, 8:49 AM - https://hackerone.com/reports/3744543hackerone.com
No excerpt available.
Exploithackerone.comJul 3, 2026, 7:16 AM No excerpt available.
Vendor Advisorycurl.seJul 3, 2026, 7:16 AMNo excerpt available.
Vendor Advisorycurl.seJul 3, 2026, 7:16 AM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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