JLSEC-2026-471

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Source

https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-471.md

Import Source

https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-471.json

JSON Data

https://api.test.osv.dev/v1/vulns/JLSEC-2026-471

Upstream

CVE-2021-31535

Published

2026-05-07T17:12:07.051Z

Modified

2026-05-07T17:15:17.326255Z

Summary

[none]

Details

LookupCol.c in X.Org X through X11R7.7 and libX11 before 1.7.1 might allow remote attackers to execute arbitrary code. The libX11 XLookupColor request (intended for server-side color lookup) contains a flaw allowing a client to send color-name requests with a name longer than the maximum size allowed by the protocol (and also longer than the maximum packet size for normal-sized packets). The user-controlled data exceeding the maximum size is then interpreted by the server as additional X protocol requests and executed, e.g., to disable X server authorization completely. For example, if the victim encounters malicious terminal control sequences for color codes, then the attacker may be able to take full control of the running graphical session.

Database specific

{
    "license": "CC-BY-4.0",
    "sources": [
        {
            "imported": "2026-05-07T16:20:05.712Z",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2021-31535",
            "id": "CVE-2021-31535",
            "database_specific": {
                "status": "Modified"
            },
            "modified": "2024-11-21T06:05:51.990Z",
            "published": "2021-05-27T13:15:08.240Z",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31535"
        }
    ]
}

References

Affected packages

Julia / Xorg_libX11_jll

Package

Name: Xorg_libX11_jll
Purl: pkg:julia/Xorg_libX11_jll?uuid=4f6342f7-b3d2-589e-9d20-edeb45f2b2bc

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.8.6+0

Database specific

source

"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-471.json"