Home/CVE/Jenkins SAML Plugin 2.0.7 and earlier allows attackers to craft URLs that would bypass the CSRF protection of any target
CVE

CVE-2021-21678

Jenkins SAML Plugin 2.0.7 and earlier allows attackers to craft URLs that would bypass the CSRF protection of any target

Jenkins SAML Plugin 2.0.7 and earlier allows attackers to craft URLs that would bypass the CSRF protection of any target URL in Jenkins.

HIGH · CVSS 8.8 EPSS 0.00065
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules3 YARA rules0
⬡

Weakness Classification

CWE-352Cross-Site Request Forgery (CSRF)
▤

Affected Products & Versions

1
jenkins saml>= 1.1.3 and <= 2.0.7
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.jenkins-ci.plugins:saml HIGH fixed in 2.0.8
◈

Sigma Hunt Rules

3
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSAML Token Issuer Anomaly
productmediumAWS SAML Provider Deletion Activity
productmediumAWS Suspicious SAML Activity
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · jenkinsci-cert@googlegroups.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD31 Aug 2021 · 02:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2021/08/31/1Mailing ListThird Party Advisory
https://www.jenkins.io/security/advisory/2021-08-31/#SECURITY-2469Vendor Advisory
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