JLSEC-2026-659

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Source

https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-659.md

Import Source

https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-659.json

JSON Data

https://api.osv.dev/v1/vulns/JLSEC-2026-659

Upstream

CVE-2025-15661

EUVD-2025-210285

GHSA-3wqh-87fg-ffgg

Published

2026-07-10T13:57:40.607Z

Modified

2026-07-18T00:02:18.330169899Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H CVSS Calculator
8.3 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/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 2dae302, contains an out-of-bounds heap read...

Details

libssh2 through 1.11.1, fixed in commit 2dae302, contains an out-of-bounds heap read vulnerability in the sftpsymlink() function in src/sftp.c that allows a malicious SSH server or man-in-the-middle attacker to disclose heap memory contents or cause a crash by sending a crafted SSHFXPNAME response. Attackers can supply a linklen value larger than the actual packet data in SSHFXPNAME responses for SFTP READLINK and REALPATH operations, triggering a heap buffer over-read of up to target_len minus one bytes due to the missing validation of available packet buffer size before the memcpy operation.

Database specific

{
    "license": "CC-BY-4.0",
    "sources": [
        {
            "modified": "2026-07-14T23:17:19.207Z",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2025-15661",
            "imported": "2026-07-17T22:21:02.942Z",
            "database_specific": {
                "status": "Analyzed"
            },
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2025-15661",
            "published": "2026-06-18T21:16:27.143Z",
            "id": "CVE-2025-15661"
        },
        {
            "modified": "2026-06-18T21:32:38Z",
            "url": "https://api.github.com/advisories/GHSA-3wqh-87fg-ffgg",
            "imported": "2026-07-17T22:21:03.136Z",
            "html_url": "https://github.com/advisories/GHSA-3wqh-87fg-ffgg",
            "id": "GHSA-3wqh-87fg-ffgg",
            "published": "2026-06-18T21:32:35Z"
        },
        {
            "modified": "2026-07-14T22:25:35Z",
            "url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2025-210285",
            "imported": "2026-07-17T22:21:13.066Z",
            "html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-210285",
            "id": "EUVD-2025-210285",
            "published": "2026-06-18T20:18:29Z"
        }
    ]
}

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

1.11.102+0

Database specific

source

"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-659.json"