CVE-2026-3805

Aliases:DEBIAN-CVE-2026-3805ALPINE-CVE-2026-3805
Advisory lineage Upstream: 0 Downstream: 15
Modified
Published: 11 Mar 2026, 10:09
Last modified:15 Sept 2026, 06:02

Vulnerability Summary

Overall Risk (default)
medium
40/100
CVSS Score
7.5 HIGH
v3.1 (cve.org)
EPSS Score
0.74% LOW
1% probability +0.71%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

11 Mar 2026, 10:09
Published
Vulnerability first disclosed
15 Sept 2026, 06:02
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.74%• Percentile: 53%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • alpine•curl

    ≥ 8.13.0, < 8.19.0-r0 | ≥ 8.13.0, < 8.19.0-r0

  • curl•curl

    8.18.0 | 8.17.0 | 8.16.0 | 8.15.0 | 8.14.1 | 8.14.0 | 8.13.0 | ≥ 8.13.0, < 8.14.2 | ≥ 8.15.0, < 8.16.1 | ≥ 8.17.0, < 8.19.0 | ≥ f4831daa9b2a97e8a2921d6b62cc4dfdd0d8646e, < e090be9f73a7a71459ef678c7cc4b1f75e3ea883 | 8.18.0 | 8.17.0 | 8.16.0 | 8.15.0 | 8.14.1 | 8.14.0 | 8.13.0

  • debian•curl

    < 8.14.1-2+deb13u4 | < 8.19.0-1

  • haxx•curl

    ≥ 8.13.0, < 8.19.0

References (6)