CVE-2021-21618
Stored XSS vulnerability in Jenkins Repository Connector Plugin
Jenkins Repository Connector Plugin 2.0.2 and earlier does not escape parameter names and descriptions for past builds, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Jenkins Repository Connector Plugin 2.0.2 and earlier does not escape parameter names and descriptions for past builds, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.
- Record
CVE-2021-21618- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE ListNo score
Jenkins Repository Connector Plugin 2.0.2 and earlier does not escape parameter names and descriptions for past builds, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.
- Record
CVE-2021-21618- Updated
- 2026-11-02
EUVDEUVD-2022-4137No score
Jenkins Repository Connector Plugin 2.0.2 and earlier does not escape parameter names and descriptions for past builds, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.
- Record
EUVD-2022-4137- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hg2w-3c4j-jjwm
Stored XSS vulnerability in Jenkins Repository Connector Plugin
Jenkins Repository Connector Plugin 2.0.2 and earlier does not escape parameter names and descriptions for past builds.
This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.
Jenkins Repository Connector Plugin 2.0.3 escapes parameter names and descriptions when creating new parameters.
- Record
GHSA-hg2w-3c4j-jjwm- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
Jenkins Repository Connector Plugin 2.0.2 and earlier does not escape parameter names and descriptions for past builds, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.
- Record
CVE-2021-21618- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-hg2w-3c4j-jjwm
Stored XSS vulnerability in Jenkins Repository Connector Plugin
Jenkins Repository Connector Plugin 2.0.2 and earlier does not escape parameter names and descriptions for past builds.
This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.
Jenkins Repository Connector Plugin 2.0.3 escapes parameter names and descriptions when creating new parameters.
- Record
GHSA-hg2w-3c4j-jjwm- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.jenkins-ci.plugins:repository-connectorMaven | through 2.0.2 | 2.0.3 |
org.jenkins-ci.plugins:repository-connectorMaven | before 2.0.3, plus listed versions 1.0.01.0.11.1.01.1.11.1.2 Show 9 moreShow less1.1.31.2.31.2.41.2.51.2.61.3.12.0.02.0.12.0.2 | 2.0.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| 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-2021-21618 is a medium vulnerability (CVSS 5.4) in Jenkins Repository Connector, published February 24, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 79.5%, the 99th percentile. Fixed in org.jenkins-ci.plugins:repository-connector 2.0.3.