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CVE-2026-8286

high CVSS 8.1 EPSS 0.3%

A vulnerability exists where a new transfer that uses STARTTLS to upgrade the connection might reuse an existing live connection even though the TLS configuration mismatches so it should not.

Versions it affects

Software versions checked with the free lookup that CVE-2026-8286 applies to, and the release that fixes it where the sources name one.

curl 8.1.2 fixed in 8.14.2

At a glance

Severity
High
CVSS base score
8.1 out of 10
Known exploited
Not in CISA's catalogue of exploited vulnerabilities
EPSS
0.3% probability of exploitation in the next 30 days, higher than 22% of scored vulnerabilities
Weakness
CWE-295
Published
2026-07-03
NVD CVE.org

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