The safe-level feature in Ruby 1.8.6 through 1.8.6-420, 1.8.7 through 1.8.7-330, and 1.8.8dev allows context-dependent attackers to modify strings via the Exception#to_s method, as demonstrated by changing an intended pathname.
Conclusion & alert: CVE-2011-1005 is rated High Exploit Risk (65.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.77%). 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 | 2026-06-15 | 2.12% | 2.77% | +0.65% |
| 2 | 2026-03-26 | 2.85% | 2.12% | -0.73% |
| 3 | 2026-02-14 | — | 2.85% | — |
Full EPSS history (19 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
normal | CVE-2011-1005: 1 GLSA(s) (201412-27), 1 atom(s) (dev-lang/ruby); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-1005 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2011-1005 |
ubuntu
|
low | CVE-2011-1005 low priority: Ubuntu including 3 source packages (ruby1.8, ruby1.9, ruby1.9.1), 27 status rows across 9 suites (dapper, hardy, karmic, lucid, maverick, natty, oneiric, precise, upstream): ignored 8, DNE 6, not-affected 6, released 5, needs-triage 2. | https://ubuntu.com/security/CVE-2011-1005 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| ruby-lang | ruby | 1.8.6 | cpe:2.3:a:ruby-lang:ruby:1.8.6:*:*:*:*:*:*:* |
| ruby-lang | ruby | 1.8.6-420 | cpe:2.3:a:ruby-lang:ruby:1.8.6-420:*:*:*:*:*:*:* |
| ruby-lang | ruby | 1.8.7 | cpe:2.3:a:ruby-lang:ruby:1.8.7:*:*:*:*:*:*:* |
| ruby-lang | ruby | 1.8.7-330 | cpe:2.3:a:ruby-lang:ruby:1.8.7-330:*:*:*:*:*:*:* |
| ruby-lang | ruby | 1.8.8 | cpe:2.3:a:ruby-lang:ruby:1.8.8:dev:*:*:*:*:*:* |