CVE Record
[ CRITICAL ]CVE-2018-1000861
Jenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability
A code execution vulnerability exists in the Stapler web framework used by Jenkins
- Vendor
- Jenkins
- Product
- Jenkins Stapler Web Framework
- CVSS
- 9.8
- EPSS (exploit probability)
- 98.3%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2018-1000861 being exploited?
Yes. CISA added CVE-2018-1000861 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 98.3% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-10-23. Full cross-catalog view: /kev-comparison
What to do
CISA required actionApply updates per vendor instructions.
US federal civilian agencies must remediate by (181 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Jenkins CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2017-1000353 Jenkins Remote Code Execution Vulnerability | [ CRITICAL ] | 9.8 | 99.7% | |
| CVE-2024-23897 Jenkins Command Line Interface (CLI) Path Traversal Vulnerabilityransomware use | [ CRITICAL ] | 9.8 | 100.0% | |
| CVE-2015-5317 Jenkins User Interface (UI) Information Disclosure Vulnerability | [ HIGH ] | 7.5 | 23.0% | |
| CVE-2019-1003029 Jenkins Script Security Plugin Sandbox Bypass Vulnerability | [ CRITICAL ] | 9.9 | 74.4% | |
| CVE-2019-1003030 Jenkins Matrix Project Plugin Remote Code Execution Vulnerability | [ CRITICAL ] | 9.9 | 97.1% |