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curl: curl: Insecure connection establishment due to TLS configuration mismatch

🗓️ 17 Aug 2026 06:40:40Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 5 Views

curl reuses live connection during STARTTLS upgrade despite mismatched TLS configuration, enabling insecure connection establishment.

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.8aarch64curl7.76.1-40.el9_8.5curl-7.76.1-40.el9_8.5.aarch64.rpm
Red Hat Enterprise Linux9.8ppc64lecurl7.76.1-40.el9_8.5curl-7.76.1-40.el9_8.5.ppc64le.rpm
Red Hat Enterprise Linux9.8s390xcurl7.76.1-40.el9_8.5curl-7.76.1-40.el9_8.5.s390x.rpm
Red Hat Enterprise Linux9.8x86_64curl7.76.1-40.el9_8.5curl-7.76.1-40.el9_8.5.x86_64.rpm
Red Hat Enterprise Linux9.8aarch64curl-debuginfo7.76.1-40.el9_8.5curl-debuginfo-7.76.1-40.el9_8.5.aarch64.rpm
Red Hat Enterprise Linux9.8i686curl-debuginfo7.76.1-40.el9_8.5curl-debuginfo-7.76.1-40.el9_8.5.i686.rpm
Red Hat Enterprise Linux9.8ppc64lecurl-debuginfo7.76.1-40.el9_8.5curl-debuginfo-7.76.1-40.el9_8.5.ppc64le.rpm
Red Hat Enterprise Linux9.8s390xcurl-debuginfo7.76.1-40.el9_8.5curl-debuginfo-7.76.1-40.el9_8.5.s390x.rpm
Red Hat Enterprise Linux9.8x86_64curl-debuginfo7.76.1-40.el9_8.5curl-debuginfo-7.76.1-40.el9_8.5.x86_64.rpm
Red Hat Enterprise Linux9.8aarch64curl-debugsource7.76.1-40.el9_8.5curl-debugsource-7.76.1-40.el9_8.5.aarch64.rpm
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17 Aug 2026 09:00Current
5Medium risk
Vulners AI Score5
CVSS 3.18.1
EPSS0.00309
SSVC
5