CVE-2026-6276
Analyzed Analyzed - Analysis Complete
BaseFortify

Publication date: 2026-05-13

Last updated on: 2026-05-14

Assigner: curl

Description
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.
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Meta Information
Published
2026-05-13
Last Modified
2026-05-14
Generated
2026-06-10
EPSS Evaluated
2026-06-08
NVD
CVE-2026-6276
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
haxx curl From 7.71.0 (inc) to 8.20.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-319 The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.
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