Public mode

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

CVE-2026-93761

Denial of service via unbounded regex matching in Mongoid's in-memory query matcher

CVSS 4.0 8.7 HIGHCVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-93761

Published

An inefficient regular expression complexity issue in the in-memory query evaluation component of the Mongoid library may allow an unauthenticated party to cause excessive processing within an embedding application process. Applications that place user-supplied text into a pattern-matching query condition on an embedded association may become unresponsive.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-93761

Published

Mongoid

Vendor product

Publisher's version information

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

{
                    "vendor": "MongoDB Inc.",
                    "product": "Mongoid",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "7.2.0",
                            "lessThanOrEqual": "7.2.6",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "7.3.0",
                            "lessThanOrEqual": "7.3.5",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "7.4.0",
                            "lessThanOrEqual": "7.4.3",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "7.5.0",
                            "lessThanOrEqual": "7.5.4",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "7.6.0",
                            "lessThanOrEqual": "7.6.1",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "8.0.0",
                            "lessThanOrEqual": "8.0.12",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "8.1.0",
                            "lessThanOrEqual": "8.1.12",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "9.0.0",
                            "lessThanOrEqual": "9.0.11",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "9.1.0"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

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