CVE-2018-1000088
Doorkeeper is vulnerable to stored XSS and code execution
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
6.1
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.
- Record
CVE-2018-1000088- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2018-1000088- Updated
- 2026-11-02
EUVDEUVD-2018-0181 No score
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.
- Record
EUVD-2018-0181- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hwhh-2fwm-cfgw
6.1
Doorkeeper is vulnerable to stored XSS and code execution
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.
- Record
GHSA-hwhh-2fwm-cfgw- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
6.1
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.
- Record
CVE-2018-1000088- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2018-1000088
6.1
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.
- Record
DEBIAN-CVE-2018-1000088- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-hwhh-2fwm-cfgw
6.1
Doorkeeper is vulnerable to stored XSS and code execution
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.
- Record
GHSA-hwhh-2fwm-cfgw- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2018-1000088
6.1
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.
- Record
UBUNTU-CVE-2018-1000088- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVUSN-7394-1 No score
ruby-doorkeeper vulnerabilities
Jonathan Clem and Justin Bull discovered that Doorkeeper could allow arbitrary token revocation and replay attacks. An attacker could possibly use this issue to gain unauthorized access to a system. (CVE-2016-6582)
It was discovered that Doorkeeper incorrectly handled storing client names. An attacker could possibly use this issue to execute a cross-site scripting (XSS) attack. (CVE-2018-1000088)
- Record
USN-7394-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
doorkeeperRubyGems |
2.1.0 to 4.2.5 | 4.2.6 |
ruby-doorkeeperDebian:12 |
before 4.3.1-1 | 4.3.1-1 |
ruby-doorkeeperDebian:13 |
before 4.3.1-1 | 4.3.1-1 |
ruby-doorkeeperDebian:14 |
before 4.3.1-1 | 4.3.1-1 |
doorkeeperRubyGems |
2.1.0 up to 4.2.6, plus listed versions 2.1.12.1.22.1.32.1.42.2.0 Show 15 moreShow less2.2.12.2.23.0.03.0.0.rc13.0.0.rc23.0.13.1.04.0.04.0.0.rc14.0.0.rc24.0.0.rc34.0.0.rc44.1.04.2.04.2.5 |
4.2.6 |
ruby-doorkeeperUbuntu:Pro:16.04:LTS |
before 2.2.1-1ubuntu0.1~esm2, plus listed versions 2.2.1-12.2.1-1ubuntu0.1~esm1 |
2.2.1-1ubuntu0.1~esm2 |
ruby-doorkeeperUbuntu:Pro:16.04:LTS From an advisory covering 2 CVEs |
before 2.2.1-1ubuntu0.1~esm2, plus listed versions 2.2.1-12.2.1-1ubuntu0.1~esm1 |
2.2.1-1ubuntu0.1~esm2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-1000088 is a medium vulnerability (CVSS 6.1) in Doorkeeper Project Doorkeeper, published March 13, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.43%, the 73rd percentile. Fixed in doorkeeper 4.2.6.
References
github.com/rubysec/ruby-advisory-db/pull/328/files
github.com/doorkeeper-gem/doorkeeper/issues/969
github.com/doorkeeper-gem/doorkeeper/releases/tag/v4.3.0
github.com/doorkeeper-gem/doorkeeper/pull/970
nvd.nist.gov/vuln/detail/CVE-2018-1000088
github.com/doorkeeper-gem/doorkeeper/commit/7b1a8373ecd69768c896000c7971dbf48948c1b5
Show 9 moreShow less
blog.justinbull.ca/cve-2018-1000088-stored-xss-in-doorkeeper
github.com/rubysec/ruby-advisory-db/blob/master/gems/doorkeeper/CVE-2018-1000088.yml
github.com/advisories/GHSA-hwhh-2fwm-cfgw
security-tracker.debian.org/tracker/CVE-2018-1000088
github.com/doorkeeper-gem/doorkeeper
ubuntu.com/security/CVE-2018-1000088
cve.org/CVERecord?id=CVE-2018-1000088
ubuntu.com/security/notices/USN-7394-1
ubuntu.com/security/CVE-2016-6582