Doorkeeper version 2.1.0 through 4.2.5 contains a Cross Site Scripting (XSS)…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
Doorkeeper version 2.1.0 through 4.2.5 contains a Cross Site Scripting (XSS) vulnerability in web view's OAuth app form, user authorization prompt web view that can result in Stored XSS on the OAuth Client's name will cause users interacting with it will execute payload. This attack appear to be exploitable via The victim must be tricked to click an opaque link to the web view that runs the XSS payload. A malicious version virtually indistinguishable from a normal link.. This vulnerability appears to have been fixed in 4.2.6, 4.3.0.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | doorkeeper (RubyGems) | 2.1.0 to before 4.2.6 | 4.2.6 | Patch available | GHSA-hwhh-2fwm-cfgw |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- doorkeeper (RubyGems) Vendor— Affected 2.1.0 to before 4.2.6 Fixed in 4.2.6 Patch available GHSA-hwhh-2fwm-cfgw
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:doorkeeper_project:doorkeeper:*:*:*:*:*:ruby:*:* | 2.1.0 – 4.2.5 | Vulnerable | Doorkeeper Project |
- cpe:2.3:a:doorkeeper_project:doorkeeper:*:*:*:*:*:ruby:*:* Versions 2.1.0 – 4.2.5 Vulnerable ·Doorkeeper Project
Remediation
- Fix · GHSA-hwhh-2fwm-cfgw doorkeeper (RubyGems) Fixed in 4.2.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2018-1000088
- 2026-10-03 Alias added: GHSA-hwhh-2fwm-cfgw
References
Advisory 2
Other 7
- https://github.com/doorkeeper-gem/doorkeeper/issues/969
- https://github.com/doorkeeper-gem/doorkeeper/releases/tag/v4.3.0
- https://github.com/doorkeeper-gem/doorkeeper/pull/970
- https://github.com/doorkeeper-gem/doorkeeper/commit/7b1a8373ecd69768c896000c7971dbf48948c1b5
- https://blog.justinbull.ca/cve-2018-1000088-stored-xss-in-doorkeeper
- https://github.com/doorkeeper-gem/doorkeeper
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/doorkeeper/CVE-2018-1000088.yml
More Doorkeeper Project Doorkeeper vulnerabilities
- TI-2023-17082 Doorkeeper Improper Authentication vulnerability CVSS 3.1MEDIUM 6.5
- TI-2016-05635 The Doorkeeper gem before 4.2.0 for Ruby might allow remote attackers to conduct replay… CVSS 3.0CRITICAL 9.1
- TI-2020-08208 Doorkeeper version 5.0.0 and later contains an information disclosure vulnerability that… CVSS 3.1HIGH 7.5
- TI-2018-15860 Doorkeeper version 4.2.0 and later contains a Incorrect Access Control vulnerability in… CVSS 3.0HIGH 7.5
- TI-2014-06759 Cross-site request forgery (CSRF) vulnerability in doorkeeper before 1.4.1 allows remote… CVSS 2.0MEDIUM 6.8
Sources
- CVE-2018-1000088 · CVE Program
- CVE-2018-1000088 · NVD
- FIRST EPSS
- GHSA-hwhh-2fwm-cfgw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences