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High 7.5Published Mar 11, 2026
CVE-2026-3805When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory.
Updated under an hour ago ()
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It affects haxx curl. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-416
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
haxx curl haxx:curl | from 8.13.0 before 8.19.0 | NVD |
References
- https://curl.se/docs/CVE-2026-3805.htmlpatch, vendor-advisory
- https://curl.se/docs/CVE-2026-3805.jsonvendor-advisory
- https://hackerone.com/reports/3591944exploit, issue-tracking, third-party-advisory
- http://www.openwall.com/lists/oss-security/2026/03/11/4mailing-list, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.