---
id: CVE-2025-22868
aliases:
  - GHSA-6v2p-p543-phr9
  - GO-2025-3488
title: >-
  golang.org/x/oauth2 Improper Validation of Syntactic Correctness of Input
  vulnerability
summary: >-
  golang.org/x/oauth2 Improper Validation of Syntactic Correctness of Input
  vulnerability
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
vendor: x
product: golang.org/x/oauth2
ecosystem: go
affected:
  - golang.org/x/oauth2 < 0.27.0
patched:
  - golang.org/x/oauth2 0.27.0
published: '2025-07-18'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:50:26.016569187Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-6v2p-p543-phr9'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-22868'
  - url: 'https://go.dev/cl/652155'
  - url: 'https://go.dev/issue/71490'
  - url: 'https://pkg.go.dev/vuln/GO-2025-3488'
tags:
  - osv
  - go
epss: 0.0087
epssPercentile: 0.57018
ingestedAt: '2026-09-12T03:13:01.760Z'
---

## Overview

An attacker can pass a malicious malformed token which causes unexpected memory to be consumed during parsing.

## Affected packages

- `golang.org/x/oauth2 < 0.27.0`

## Remediation

Upgrade to a patched release:

- `golang.org/x/oauth2 0.27.0`