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CVE-2021-21660

MEDIUM
5.4
CVSS Score
Published: May 25, 2021 at 02:10 PM UTC
Updated: June 17, 2026 at 03:35 AM UTC
1 product affected across 1 vendorMarkdown Formatter

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Severity
MEDIUM5.4
Exploit prediction
EPSS 1%

Description

Jenkins Markdown Formatter Plugin 0.1.0 and earlier does not sanitize crafted link target URLs, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with the ability to edit any description rendered using the configured markup formatter.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Markdown Formatter· Jenkinsjenkins-plugin
95%
v ≤ 0.1.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/05/25/3
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://www.jenkins.io/security/advisory/2021-05-25/#SECURITY-2198
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-21660

CVSS

5.4MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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