Vulnerability Description
When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory.
CVSS Score
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Haxx | Curl | >= 8.13.0, < 8.19.0 |
Related Weaknesses (CWE)
References
- https://curl.se/docs/CVE-2026-3805.htmlPatchVendor Advisory
- https://curl.se/docs/CVE-2026-3805.jsonVendor Advisory
- https://hackerone.com/reports/3591944ExploitIssue TrackingThird Party Advisory
- http://www.openwall.com/lists/oss-security/2026/03/11/4Mailing ListThird Party Advisory
FAQ
What is CVE-2026-3805?
CVE-2026-3805 is a vulnerability with a CVSS score of 7.5 (HIGH). When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory.
How severe is CVE-2026-3805?
CVE-2026-3805 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-3805?
Check the references section above for vendor advisories and patch information. Affected products include: Haxx Curl.