Public mode

No access to your tenant or devices. Every item links to its source. What this means

CVE-2026-82052

$regexFindAll may crash mongod server when byte-matching multi-byte UTF-8 chars

CVSS 4.0 7.1 HIGHCVSS 3.1 6.5 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-82052

Published

The $regexFindAll expression can be used by an authenticated user who can run aggregation pipeline stages to crash a MongoDB server (mongod). Under certain specific conditions the regex match can start in the middle of a multi-code-unit character, triggering an assertion during query execution.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-82052

Published

MongoDB Server

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "MongoDB",
                    "product": "MongoDB Server",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "8.3.0",
                            "lessThan": "8.3.9",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "8.0",
                            "lessThan": "8.0.30",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "7.0",
                            "lessThan": "7.0.41",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON