CVE-2026-3805

HIGH EPSS 49.1%
Published Mar 11, 20263mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Mar 11, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
49.1% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 1

VendorProductVersionRange
haxxcurl*≥8.13.0  –  <8.19.0

References 4

  • openwall.com http://www.openwall.com/lists/oss-security/2026/03/11/4
    Mailing ListThird Party Advisory
  • curl.se https://curl.se/docs/CVE-2026-3805.html
    PatchVendor Advisory
  • curl.se https://curl.se/docs/CVE-2026-3805.json
    Vendor Advisory
  • hackerone.com https://hackerone.com/reports/3591944
    ExploitIssue TrackingThird Party Advisory

Remediation

  • curl.se https://curl.se/docs/CVE-2026-3805.html
    PatchVendor Advisory