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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-80255

secure cookie attribute bypass with tab

Description

A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of space (ascii code 32) immediately before the `Secure` attribute causes curl to store the cookie without its Secure flag. The cookie might then wrongfully be sent over plaintext HTTP on subsequent requests to the same host.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

curl curl

Default version status: unaffected

  • 8.13.0 to < 8.14.2affected
  • 8.15.0 to < 8.16.1affected
  • 8.17.0 to < 8.20.1affected
  • 8.21.0 to < 8.22.0affected

curl curl

Default version status: unaffected

  • 1aea05a6c2699e80c75936d58569851555acd603 to < 4f6aa41a0145e930e766775dbe860883d350aa0aaffected

curl curl

Default version status: unaffected

  • 8.21.0affected
  • 8.20.0affected
  • 8.19.0affected
  • 8.18.0affected
  • 8.17.0affected
  • 8.16.0affected
  • 8.15.0affected
  • 8.14.1affected
  • 8.14.0affected
  • 8.13.0affected

References