GHSA-369m-2gv6-mw28 · Severity: high · Ecosystem: rubygems — WEBrick RCE Vulnerability
The Basic authentication code in WEBrick library in Ruby before 2.2.8, 2.3.x before 2.3.5, and 2.4.x through 2.4.1 allows remote attackers to inject terminal emulator escape sequences into its log and possibly execute arbitrary commands via a crafted user name.
Conclusion & alert: CVE-2017-10784 is rated High Risk (74/100): CVSS High severity, with high exploitation likelihood (EPSS 16.41%, 97th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +14.29% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 2026-06-15 | 2.12% | 16.41% | +14.29% |
| 2 | 2026-05-22 | 1.60% | 2.12% | +0.52% |
| 3 | 2026-04-18 | — | 1.60% | — |
Full EPSS history (53 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.0 | HIGH |
|
2.8 | 5.9 | [email protected] |
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |
GHSA-369m-2gv6-mw28 · Severity: high · Ecosystem: rubygems — WEBrick RCE Vulnerability
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2017-10784: 1 source package rows (ruby); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. | https://security.alpinelinux.org/vuln/CVE-2017-10784 |
gentoo
|
normal | CVE-2017-10784: 1 GLSA(s) (201710-18), 1 atom(s) (dev-lang/ruby); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-10784 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2017-10784 |
suse
|
medium | CVE-2017-10784 severity moderate: SUSE including 29 source package names (libruby2_1-2_1-2.1.9-19.3.2, libruby2_5-2_5, …), 219 product×package rows across 73 product lines (HPE Helion OpenStack 8, Image SLES12-SP5-Azure-BYOS, … (73 product lines)): Fixed 140, Known Not Affected 74, Will Not Fix 5. | https://www.suse.com/security/cve/CVE-2017-10784/ |
ubuntu
|
medium | CVE-2017-10784 medium priority: Ubuntu including 3 source packages (ruby1.9.1, ruby2.0, ruby2.3), 18 status rows across 6 suites (artful, bionic, trusty, upstream, xenial, zesty): DNE 10, released 4, needs-triage 3, ignored 1. | https://ubuntu.com/security/CVE-2017-10784 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| ruby-lang | ruby | <= 2.2.7 | cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* |
| ruby-lang | ruby | 2.3.0 | cpe:2.3:a:ruby-lang:ruby:2.3.0:*:*:*:*:*:*:* |
| ruby-lang | ruby | 2.3.0 | cpe:2.3:a:ruby-lang:ruby:2.3.0:preview1:*:*:*:*:*:* |
| ruby-lang | ruby | 2.3.0 | cpe:2.3:a:ruby-lang:ruby:2.3.0:preview2:*:*:*:*:*:* |
| ruby-lang | ruby | 2.3.1 | cpe:2.3:a:ruby-lang:ruby:2.3.1:*:*:*:*:*:*:* |
| ruby-lang | ruby | 2.3.2 | cpe:2.3:a:ruby-lang:ruby:2.3.2:*:*:*:*:*:*:* |
| ruby-lang | ruby | 2.3.3 | cpe:2.3:a:ruby-lang:ruby:2.3.3:*:*:*:*:*:*:* |
| ruby-lang | ruby | 2.3.4 | cpe:2.3:a:ruby-lang:ruby:2.3.4:*:*:*:*:*:*:* |
| ruby-lang | ruby | 2.4.0 | cpe:2.3:a:ruby-lang:ruby:2.4.0:*:*:*:*:*:*:* |
| ruby-lang | ruby | 2.4.0 | cpe:2.3:a:ruby-lang:ruby:2.4.0:preview1:*:*:*:*:*:* |
| ruby-lang | ruby | 2.4.0 | cpe:2.3:a:ruby-lang:ruby:2.4.0:preview2:*:*:*:*:*:* |
| ruby-lang | ruby | 2.4.0 | cpe:2.3:a:ruby-lang:ruby:2.4.0:preview3:*:*:*:*:*:* |
| ruby-lang | ruby | 2.4.0 | cpe:2.3:a:ruby-lang:ruby:2.4.0:rc1:*:*:*:*:*:* |
| ruby-lang | ruby | 2.4.1 | cpe:2.3:a:ruby-lang:ruby:2.4.1:*:*:*:*:*:*:* |