CVE-2026-87862

None

CVSS

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EPSS

0.3%

Published

Oct 20, 2026

CISA due date

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The record

Importing a `includeSubDomains` parent HSTS entry before a longer-lived child entry, silently drops the child. Consequently, when the parent expires, the child's valid HSTS policy is lost, causing curl to issue unencrypted HTTP requests rather than upgrading to HTTPS.

Affected packages

Ecosystem	Package	Introduced	Fixed