An issue was discovered in ThoughtWorks GoCD before 21.3.0. An attacker who has compromised a GoCD agent can upload a malicious file into a directory of a GoCD server. They can control the filename but the directory is placed inside of a directory that they can't control.
Conclusion & alert: CVE-2021-43290 is rated High Exploit Risk (84.4/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 3.66%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-04-06 | 4.23% | 3.66% | -0.57% |
| 2 | 2026-03-04 | 2.71% | 4.23% | +1.51% |
| 3 | 2026-03-01 | — | 2.71% | — |
Full EPSS history (53 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| thoughtworks | gocd | < 21.3.0 | cpe:2.3:a:thoughtworks:gocd:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://blog.sonarsource.com/gocd-vulnerability-chain | Exploit Patch Third Party Advisory |
| https://github.com/gocd/gocd/commit/4c4bb4780eb0d3fc4cacfc4cfcc0b07e2eaf0595 | Patch Third Party Advisory |
| https://github.com/gocd/gocd/commit/c22e0428164af25d3e91baabd3f538a41cadc82f | Patch Third Party Advisory |
| https://www.gocd.org/releases/#21-3-0 | Issue Tracking Release Notes Vendor Advisory |