EUVD-2026-25617Published

Better Auth OAuth 2.1 Provider: Unprivileged users can register OAuth clients

cve-program · CVE-2026-41427

Published

better-auth

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "better-auth",
                    "product": "better-auth",
                    "versions": [
                        {
                            "version": ">= 1.4.8-beta.7, < 1.6.5",
                            "status": "affected"
                        },
                        {
                            "version": ">= 1.7.0-beta.0, <= 1.7.0-beta.1",
                            "status": "affected"
                        }
                    ]
                }

oauth-provider

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "better-auth",
                    "product": "oauth-provider",
                    "versions": [
                        {
                            "version": ">= 1.4.8-beta.7, < 1.6.5",
                            "status": "affected"
                        },
                        {
                            "version": ">= 1.7.0-beta.0, <= 1.7.0-beta.1",
                            "status": "affected"
                        }
                    ]
                }

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

euvd · EUVD-2026-25617

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Apr 24, 2026, 7:23:20 PM

dateUpdated: Apr 27, 2026, 1:42:23 PM

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

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

nvd · CVE-2026-41427

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-863

Original publisher date fields

published: 2026-04-24T20:16:27.390

lastModified: 2026-10-26T21:10:00.170

4 source CPE criteria · context only

cpe:2.3:a:better-auth:better-auth\/oauth-provider:*:*:*:*:*:node.js:*:*
cpe:2.3:a:better-auth:better-auth\/oauth-provider:1.4.8:-:*:*:*:node.js:*:*
cpe:2.3:a:better-auth:better-auth\/oauth-provider:1.4.8:beta7:*:*:*:node.js:*:*
cpe:2.3:a:better-auth:better-auth\/oauth-provider:1.7.0:beta0:*:*:*:node.js:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

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

osv · GHSA-xr8f-h2gw-9xh6

Published

@better-auth/oauth-provider

npm

SEMVER · introduced 1.4.8-beta.7 → fixed 1.6.5

@better-auth/oauth-provider

npm

SEMVER · introduced 1.7.0-beta.0 → last_affected 1.7.0-beta.1

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