CVE-2026-80255
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| curl | curl | 8.13.0 < 8.14.2 | affected |
| curl | curl | 8.15.0 < 8.16.1 | affected |
| curl | curl | 8.17.0 < 8.20.1 | affected |
| curl | curl | 8.21.0 < 8.22.0 | affected |
| curl | curl | 1aea05a6c2699e80c75936d58569851555acd603 < 4f6aa41a0145e930e766775dbe860883d350aa0a | affected |
| curl | curl | 8.21.0 | affected |
| curl | curl | 8.20.0 | affected |
| curl | curl | 8.19.0 | affected |
| curl | curl | 8.18.0 | affected |
| curl | curl | 8.17.0 | affected |
| curl | curl | 8.16.0 | affected |
| curl | curl | 8.15.0 | affected |
| curl | curl | 8.14.1 | affected |
| curl | curl | 8.14.0 | affected |
| curl | curl | 8.13.0 | affected |
Weaknesses
- CWE-201: Information Exposure Through Sent Data
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: yes
- Technical Impact: partial
Additional References
References
- https://curl.se/docs/CVE-2026-80255.json
- https://curl.se/docs/CVE-2026-80255.html
- https://hackerone.com/reports/3972395
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