stale custom cookie host causes cookie leak
Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.
cve-program · CVE-2026-6276
PublishedUsing libcurl, when a custom `Host:` header is first set for an HTTP request and a second request is subsequently done using the same *easy handle* but without the custom `Host:` header set, the second request would use stale information and pass on cookies meant for the first host in the second request. Leak them.
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cve-program · CVE-2026-6276
Publishedstale custom cookie host causes cookie leak
Using libcurl, when a custom `Host:` header is first set for an HTTP request and a second request is subsequently done using the same *easy handle* but without the custom `Host:` header set, the second request would use stale information and pass on cookies meant for the first host in the second request. Leak them.
- Source published
- 13 May 2026 08:28:19 UTC
- Source modified
- 15 Sep 2026 06:03:04 UTC
- Saved here
- 23 Oct 2026 15:48:27 UTC
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