CVE-2025-14819
OpenSSL partial chain store policy bypass
Description
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:HAttack ComplexityHigh
PR:NPrivileges RequiredNone
UI:RUser InteractionRequired
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:NIntegrityNone
A:NAvailabilityNone
Weaknesses
Affected Products
Red Hat Inc.
commercial·USaka red hat
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Canonical Ltd.
commercial·GBaka canonical
Daniel Stenberg
individual-devaka daniel.haxx.se, daniel stenberg (curl author)
curl
oss-project·USaka wcurl, libcurl
haxx
oss-project·SEaka haxx.se
Exploitability
Official Patch Available
Workaround Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
1 technique Collection
References
http://www.openwall.com/lists/oss-security/2026/01/07/5
openwall.com
https://curl.se/docs/CVE-2025-14819.html
curl.se
https://curl.se/docs/CVE-2025-14819.json
curl.se
and 9 more references View all →
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