CVE-2026-80255

EUVD-2026-72151
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
curlCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 39.82%
Affected Products (NVD)
VendorProductVersion
haxxcurl
8.13.0 ≤
𝑥
< 8.22.0
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
curlcurl
8.13.0 ≤
𝑥
< 8.14.2
CNA
curlcurl
8.15.0 ≤
𝑥
< 8.16.1
CNA
curlcurl
8.17.0 ≤
𝑥
< 8.20.1
CNA
curlcurl
8.21.0 ≤
𝑥
< 8.22.0
CNA
curlcurl
8.21.0
CNA
curlcurl
8.20.0
CNA
curlcurl
8.19.0
CNA
curlcurl
8.18.0
CNA
curlcurl
8.17.0
CNA
curlcurl
8.16.0
CNA
curlcurl
8.15.0
CNA
curlcurl
8.14.1
CNA
curlcurl
8.14.0
CNA
curlcurl
8.13.0
CNA
Debian logo
Debian Releases
Debian Product
Codename
curl
bookworm
7.88.1-10+deb12u15
fixed
bookworm (security)
7.88.1-10+deb12u5
fixed
forky
8.22.0-1
fixed
sid
8.23.0~rc3-1
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
curl
bionic
not-affected
focal
not-affected
jammy
not-affected
noble
not-affected
resolute
Fixed 8.18.0-1ubuntu2.7
released
trusty
not-affected
xenial
not-affected