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CVE-2018-1000088

Doorkeeper is vulnerable to stored XSS and code execution

6.1 MediumFix available

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

1.43%Up 0.3 points since Apr 14, 2021
90%50%10%1%

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 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0
4.3 MediumAV: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 MediumCVSS: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 MediumCVSS: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 MediumCVSS: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 MediumCVSS: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 MediumCVSS: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

Affected packages
PackageAffectedFixed
doorkeeper
RubyGems
2.1.0 to 4.2.5
4.2.6
ruby-doorkeeper
Debian:12
before 4.3.1-1
4.3.1-1
ruby-doorkeeper
Debian:13
before 4.3.1-1
4.3.1-1
ruby-doorkeeper
Debian:14
before 4.3.1-1
4.3.1-1
doorkeeper
RubyGems
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 less
2.2.12.2.23.0.03.0.0.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-doorkeeper
Ubuntu: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-doorkeeper
Ubuntu: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

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE 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

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