Riskcovery

CVE-2026-80255

secure cookie attribute bypass with tab

State
Published
Severity
7.5 High
Published
Sep 6, 2026
Updated
Sep 15, 2026
Reserved
Aug 26, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NCISA-ADP

Weaknesses

  • CWE-201 Information Exposure Through Sent Data

Affected Products

ProductVersions
curlcurl
  • 8.13.0 to before 8.14.2Affected
  • 8.15.0 to before 8.16.1Affected
  • 8.17.0 to before 8.20.1Affected
  • 8.21.0 to before 8.22.0Affected
curlcurl
  • 1aea05a6c2699e80c75936d58569851555acd603 to before 4f6aa41a0145e930e766775dbe860883d350aa0aAffected
curlcurl
  • 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

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.