CVE-2021-21678 json
Jenkins SAML Plugin allows bypassing CSRF protection for any URL
published 2021-08-31 5 y ago modified 2026-06-17 4 mo ago also GHSA-r5w3-pfq8-3r82 , EUVD-2022-5102
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- maven org.jenkins-ci.plugins:saml 2.0.8
- Jenkins project Jenkins SAML Plugin 1.1.8, 2.0.3.1
Exploit prediction
0.81% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.jenkins-ci.plugins:saml | <2.0.8 |
2.0.8 |
Affected products
- Jenkins project Jenkins SAML Plugin
Classification
References
-
github.com
/jenkinsci/saml-plugin/commit/e063317ee7e1c64a096e0ac323c7155b786c8b9d
web
-
jenkins.io
/security/advisory/2021-08-31/#SECURITY-2469
web, vendor-advisory
-
openwall.com
/lists/oss-security/2021/08/31/1
mailing-list, web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-21678
advisory
-
github.com
/jenkinsci/saml-plugin
package
Sources
- CVE List CVE-2021-21678
- GitHub Advisory GHSA-r5w3-pfq8-3r82
- NVD CVE-2021-21678
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