A cleartext transmission of sensitive information vulnerability exists in curl
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Score 6.5 from GitHub Security Advisory published 2023-02-23. NVD baseline CVSS 6.5; sources differ by 0.0.
A cleartext transmission of sensitive information vulnerability exists in curl
February 23, 2023
February 13, 2026
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | curl (7.85.0-1ubuntu0.3) @ kinetic | 2026-05-25 | ubuntu |
| redhat | jbcs-httpd24-curl | 2023-06-05 | redhat |
| redhat | jbcs-httpd24-curl-0:8.0.1-1.el7jbcs | 2023-06-05 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
A cleartext transmission of sensitive information vulnerability exists in curl <v7.88.0 that could cause HSTS functionality to behave incorrectly when multiple URLs are requested in parallel. Using its HSTS support curl can be instructed to use HTTPS instead of using an insecure clear-text HTTP step even when HTTP is provided in the URL. This HSTS mechanism would however surprisingly fail when multiple transfers are done in parallel as the HSTS cache file gets overwritten by the most recentlycompleted transfer. A later HTTP-only transfer to the earlier host name would then *not* get upgraded properly to HSTS.
RHSA-2023:3354 — Low
RHSA-2023:3355 — Low
curl vulnerabilities
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msrc · redhat
CWE-319