CVE-2025-14819

EUVD-2026-1566
When doing TLS related transfers with reused easy or multi handles and
altering the  `CURLSSLOPT_NO_PARTIALCHAIN` option, libcurl could accidentally
reuse a CA store cached in memory for which the partial chain option was
reversed. Contrary to the user's wishes and expectations. This could make
libcurl find and accept a trust chain that it otherwise would not.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
CISA-ADPADP
5.3 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 11%
Affected Products (NVD)
VendorProductVersion
haxxcurl
7.87.0 ≤
𝑥
< 8.18.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
curl
bookworm
no-dsa
bookworm (security)
vulnerable
bullseye
7.74.0-1.3+deb11u13
not-affected
bullseye (security)
7.74.0-1.3+deb11u16
fixed
forky
8.18.0-2
fixed
sid
8.19.0~rc2-2
fixed
trixie
no-dsa
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://curl.se/docs/CVE-2025-14819.html
https://curl.se/docs/CVE-2025-14819.json
http://www.openwall.com/lists/oss-security/2026/01/07/5