CVE-2021-21668: Jenkins Scriptler Plugin 3.1 and earlier does not escape script content, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by…

PriorityP342medium5.4CVSS 3.1

AVNACLPRLUIRSCCLILAN

EPSS

76.02%

99.5th percentile

Jenkins Scriptler Plugin 3.1 and earlier does not escape script content, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Scriptler/Configure permission.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
jenkins	scriptler	<= 3.1	—
jenkins	scriptler_plugin	—	—
jenkins_project	jenkins_scriptler_plugin	unspecified – 3.1	—

Detection & IOCsextracted from sources · hover to see the quote

→Stored XSS in Scriptler Plugin 3.1 and earlier: script content is not escaped, exploitable by users with Scriptler/Configure permission. Monitor for script submissions containing unsanitized HTML/JS payloads via the Scriptler configuration interface. ↗

·Exploitation requires the attacker to have Scriptler/Configure permission on the Jenkins instance; this is not an unauthenticated attack vector. ↗
·Only Scriptler Plugin versions up to and including 3.1 are affected by CVE-2021-21668; version 3.2 introduces escaping of script content and is the fix. ↗

CVSS provenance

nvdv3.15.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

nvdv2.03.5LOWAV:N/AC:M/Au:S/C:N/I:P/A:N

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