CVE-2026-3805

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Source
https://cve.org/CVERecord?id=CVE-2026-3805
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3805.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-3805
Aliases
Downstream
ALPINE (1)
BELL (1)
DEBIAN (1)
ECHO (1)
JLSEC (1)
MINI (1)
openSUSE (2)
RHSA (1)
ROOT (4)
SUSE (8)
UBUNTU (1)
Related
openSUSE (2)
SUSE (8)
Published
2026-03-11T10:09:37Z
Modified
2026-10-22T07:28:24Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
use after free in SMB connection reuse
Details

When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory.

Database specific 
{
    "cna_assigner":  "curl",
    "cwe_ids":  [
        "CWE-416"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3805.json"
}
References

Affected packages

Git / github.com/curl/curl.git

Affected ranges

Type
GIT
Repo
https://github.com/curl/curl.git
Events
Introduced
f4831daa9b2a97e8a2921d6b62cc4dfdd0d8646e
Fixed
e090be9f73a7a71459ef678c7cc4b1f75e3ea883
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "f4831daa9b2a97e8a2921d6b62cc4dfdd0d8646e"
                },
                {
                    "fixed":  "e090be9f73a7a71459ef678c7cc4b1f75e3ea883"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        }
    ]
}

Affected versions

8.*
8.13.0
8.14.0
8.14.1
8.15.0
8.16.0
8.17.0
8.18.0
Other
curl-8_13_0
curl-8_14_0
curl-8_14_1
curl-8_15_0
curl-8_16_0
curl-8_17_0
curl-8_18_0
rc-8_18_0-1
rc-8_18_0-2
rc-8_18_0-3
rc-8_19_0-1
rc-8_19_0-2
rc-8_19_0-3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3805.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "289847432197702324794191133246124145933",
            "length":  724
        },
        "id":  "CVE-2026-3805-2ab8a3de",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/curl/curl.git/commit/e090be9f73a7a71459ef678c7cc4b1f75e3ea883",
        "target":  {
            "file":  "lib/smb.c",
            "function":  "smb_parse_url_path"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "163808748811371786782199699897667189542",
                "325457013810826341318211040079781078716",
                "294062214089768537536365967120238280223",
                "132655654719507066228448899200264599584",
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                "160476659609237798664993381375506485381",
                "335829492365890858833679582634694893217",
                "289029429182370148455254646371324641286",
                "56746537489207671791044405436147061958",
                "33160512070584524310817563226480877156",
                "102643015126280826627871954385407506312",
                "290813323667203918291440619953973589670",
                "184473145691120205563893336541950338029",
                "5673371021612161770379471572141457256",
                "167416925871956933097257764103393210532",
                "165710950848604753851934805710205714833",
                "21212123070025071099371863703377579277",
                "66934316479251411395459401656526835667"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-3805-8d0d6de0",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/curl/curl.git/commit/e090be9f73a7a71459ef678c7cc4b1f75e3ea883",
        "target":  {
            "file":  "lib/smb.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "283418310670605729825737110288136594220",
            "length":  150
        },
        "id":  "CVE-2026-3805-cd34babf",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/curl/curl.git/commit/e090be9f73a7a71459ef678c7cc4b1f75e3ea883",
        "target":  {
            "file":  "lib/smb.c",
            "function":  "smb_easy_dtor"
        }
    }
]
vanir_signatures_modified 
"2026-10-22T07:28:24Z"