CRITICALVulnerability
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`.
Properties
- severity
- CRITICAL
- score
- 9.1
- epss_score
- 0.005
- cve_id
- CVE-2026-8927
- signal_observed_at
- 2026-09-15T07:22:04+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- published_at
- 2026-07-03T07:16:25.123
- last_modified
- 2026-09-15T07:16:33.157
- epss_percentile
- 0.41448
Related Entities (4)
ENRICHED_BY (1)
→[Source]FIRST EPSS
HAS_WEAKNESS (1)
→[Weakness]Authentication Bypass by Capture-replay
DESCRIBED_BY (1)
→[Source]NVD
AFFECTS_PRODUCT (1)
→[Product]
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