CVE-2026-82208
Last modified
CVE-2026-82208 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. With the wolfSSL backend, when CA caching is enabled and an `CURLOPT_SSL_CTX_FUNCTION` callback replaces the trust store, libcurl can silently reinstall the cached store after the callback returns. A certificate trusted by the cached store but rejected by the callback-selected store is then incorrectly accepted.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.
Description
With the wolfSSL backend, when CA caching is enabled and an `CURLOPT_SSL_CTX_FUNCTION` callback replaces the trust store, libcurl can silently reinstall the cached store after the callback returns. A certificate trusted by the cached store but rejected by the callback-selected store is then incorrectly accepted.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Haxx | Curl | >= 8.9.1, < 8.22.0 |
References
- https://curl.se/docs/CVE-2026-82208.htmlPatch, Vendor Advisory
- https://curl.se/docs/CVE-2026-82208.jsonVendor Advisory
- https://hackerone.com/reports/3973090Exploit, Mitigation, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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