JLSEC-2026-1085

See a problem?
Please try reporting it to the source first.

Source

https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-1085.md

Import Source

https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1085.json

JSON Data

https://api.osv.dev/v1/vulns/JLSEC-2026-1085

Upstream

CVE-2026-66032

EUVD-2026-48719

GHSA-83r8-6c29-8gwr

Published

2026-07-31T18:09:08.751Z

Modified

2026-07-31T18:20:50.317230712Z

Severity

8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator

Summary

libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the...

Details

libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the sftp_open() function in src/sftp.c that allows a malicious SSH server to corrupt the heap of any authenticated client opening an SFTP session. When a server responds to SSH_FXP_OPEN with SSH_FXP_STATUS containing FX_OK, the response data buffer is freed, and if a subsequent sftp_packet_require() call returns a specific error such as LIBSSH2_ERROR_CHANNEL_PACKET_EXCEEDED, the same pointer is freed a second time, enabling tcache dup conditions on glibc systems that allow overlapping allocations and function pointer overwrites.

Database specific

{
    "license": "CC-BY-4.0",
    "sources": [
        {
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-66032",
            "database_specific": {
                "status": "Undergoing Analysis"
            },
            "modified": "2026-07-30T16:43:03.817Z",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-66032",
            "imported": "2026-07-31T17:07:30.261Z",
            "id": "CVE-2026-66032",
            "published": "2026-07-24T17:17:35.120Z"
        },
        {
            "imported": "2026-07-31T17:07:26.852Z",
            "html_url": "https://github.com/advisories/GHSA-83r8-6c29-8gwr",
            "modified": "2026-07-24T18:31:37Z",
            "url": "https://api.github.com/advisories/GHSA-83r8-6c29-8gwr",
            "id": "GHSA-83r8-6c29-8gwr",
            "published": "2026-07-24T18:31:29Z"
        },
        {
            "html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-48719",
            "imported": "2026-07-31T17:07:23.894Z",
            "modified": "2026-07-28T01:06:24Z",
            "url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-48719",
            "id": "EUVD-2026-48719",
            "published": "2026-07-24T16:32:39Z"
        }
    ]
}

References

Affected packages

Julia / LibSSH2_jll

Package

Name: LibSSH2_jll
Purl: pkg:julia/LibSSH2_jll?uuid=29816b5a-b9ab-546f-933c-edad1886dfa8

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.11.104+0

Database specific

source

"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1085.json"