CVE-2026-80231: native CA store conn reuse
Vendor fix available · Affected: curl · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 60% of scored CVEs
DescriptionCVE.org
A flaw in libcurl makes it wrongly reuse an existing HTTPS connection setup for a given hostname even when using a different Native CA Store setting (`CURLSSLOPT_NATIVE_CA`) than when the connection was created.
Affected products3
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- curl · curlfrom 7.71.0 before 8.14.2; from 8.15.0 before 8.16.1; from 8.17.0 before 8.20.1; from 8.21.0 before 8.22.0
- curl · curlVersions not stated
- curl · curl8.21.0; 8.20.0; 8.19.0; 8.18.0; 8.17.0; 8.16.0 and 49 more
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- curl
- Published
- September 2026
- Bounty reports
- 2 disclosed on HackerOne
Disclosed bug bounty reports about CVE-2026-80231
The reports on HackerOne that name this CVE, with HackerOne's own outcome. Titles and metadata only.
- TLS session resumption client cert bypass with CURLOPT_SSL_CTX_FUNCTIONcurl · 2026 · medium severityInformative
- CVE-2026-80231: native CA store conn reusecurl · 2026 · low severityValid
CoverageNo articles yet
No CyberSIXT article names CVE-2026-80231 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.