JLSEC-2026-631

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Source

https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-631.md

Import Source

https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-631.json

JSON Data

https://api.osv.dev/v1/vulns/JLSEC-2026-631

Upstream

CVE-2026-43620

EUVD-2026-31012

GHSA-jmf6-74r8-6c28

Published

2026-06-25T17:41:14.392Z

Modified

2026-07-02T05:46:39.789034664Z

Severity

6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

Rsync version 3.4.2 and prior contain a receiver-side out-of-bounds array read vulnerability in...

Details

Rsync version 3.4.2 and prior contain a receiver-side out-of-bounds array read vulnerability in recvfiles() in receiver.c that allows a malicious rsync server to crash the rsync client process. Attackers can exploit the vulnerability by setting CFINCRECURSE in compatibility flags and sending a specially crafted file list where the first sorted entry is not the leading dot directory, followed by a transfer record with ndx=0 and an iflag word without ITEMTRANSFER, causing the receiver to read 8 bytes before the allocated pointer array and dereference an invalid pointer at an unmapped address, resulting in a deterministic SIGSEGV crash of the rsync client.

Database specific

{
    "sources": [
        {
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43620",
            "database_specific": {
                "status": "Analyzed"
            },
            "modified": "2026-06-17T10:49:55.420Z",
            "published": "2026-05-20T02:16:36.727Z",
            "imported": "2026-06-25T17:27:23.356Z",
            "id": "CVE-2026-43620",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-43620"
        },
        {
            "url": "https://api.github.com/advisories/GHSA-jmf6-74r8-6c28",
            "html_url": "https://github.com/advisories/GHSA-jmf6-74r8-6c28",
            "imported": "2026-06-25T17:27:26.144Z",
            "published": "2026-05-20T03:31:33Z",
            "id": "GHSA-jmf6-74r8-6c28",
            "modified": "2026-05-20T03:31:41Z"
        },
        {
            "modified": "2026-05-26T14:36:32Z",
            "url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-31012",
            "imported": "2026-06-25T17:27:24.663Z",
            "published": "2026-05-20T00:47:57Z",
            "id": "EUVD-2026-31012",
            "html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-31012"
        }
    ],
    "license": "CC-BY-4.0"
}

References

Affected packages

Julia / rsync_jll

Package

Name: rsync_jll
Purl: pkg:julia/rsync_jll?uuid=191d6b87-264a-55f5-a0e2-c8fbce9a1ce0

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

3.4.4+0

Database specific

source

"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-631.json"