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
  • EUVD-2026-31012
  • GHSA-jmf6-74r8-6c28
Published
2026-06-25T17:41:14.392Z
Modified
2026-07-25T18:23:57.976980126Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • 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/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
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 recv_files() in receiver.c that allows a malicious rsync server to crash the rsync client process. Attackers can exploit the vulnerability by setting CF_INC_RECURSE 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 ITEM_TRANSFER, 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": [
        {
            "imported": "2026-07-17T22:15:29.828Z",
            "id": "CVE-2026-43620",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-43620",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43620",
            "modified": "2026-07-14T21:16:53.240Z",
            "database_specific": {
                "status": "Analyzed"
            },
            "published": "2026-05-20T02:16:36.727Z"
        },
        {
            "id": "GHSA-jmf6-74r8-6c28",
            "url": "https://api.github.com/advisories/GHSA-jmf6-74r8-6c28",
            "html_url": "https://github.com/advisories/GHSA-jmf6-74r8-6c28",
            "modified": "2026-05-20T03:31:41Z",
            "imported": "2026-07-17T22:15:29.988Z",
            "published": "2026-05-20T03:31:33Z"
        },
        {
            "id": "EUVD-2026-31012",
            "url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-31012",
            "html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-31012",
            "modified": "2026-07-14T20:01:07Z",
            "imported": "2026-07-17T22:15:38.031Z",
            "published": "2026-05-20T00:47:57Z"
        }
    ],
    "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"