GHSA-fp4w-jxhp-m23p · Severity: high · Ecosystem: rubygems — Dependency Confusion in Bundler
Bundler 1.16.0 through 2.2.9 and 2.2.11 through 2.2.16 sometimes chooses a dependency source based on the highest gem version number, which means that a rogue gem found at a public source may be chosen, even if the intended choice was a private gem that is a dependency of another private gem that is explicitly depended on by the application. NOTE: it is not correct to use CVE-2021-24105 for every "Dependency Confusion" issue in every product.
Conclusion & alert: CVE-2020-36327 is rated High Exploit Risk (81.9/100): CVSS High severity, with high exploitation likelihood (EPSS 25.07%, 96th percentile). Core evidence: 2 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 ↗ | |
| — | 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 | 2026-06-03 | 27.11% | 25.07% | -2.04% |
| 2 | 2026-06-02 | 24.73% | 27.11% | +2.38% |
| 3 | 2026-05-25 | — | 24.73% | — |
Full EPSS history (70 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |
GHSA-fp4w-jxhp-m23p · Severity: high · Ecosystem: rubygems — Dependency Confusion in Bundler
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2020-36327: 1 source package rows (ruby-bundler); 3 state rows across 3 repos (3.10-main, 3.11-main, 3.12-main); fixed 0, open 3. | https://security.alpinelinux.org/vuln/CVE-2020-36327 |
debian
|
not yet assigned | CVE-2020-36327 not yet assigned priority: Debian including 1 source packages (rubygems), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. | https://security-tracker.debian.org/tracker/CVE-2020-36327 |
gentoo
|
normal | CVE-2020-36327: 1 GLSA(s) (202408-22), 1 atom(s) (dev-ruby/bundler); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-36327 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2020-36327 |
suse
|
high | CVE-2020-36327 severity important: SUSE including 271 source package names (2.21-61.3:ruby2.5-rubygem-bundler-2.2.34-150000.3.11.1, 2.5-31.57:ruby2.5-rubygem-bundler-2.2.34-150000.3.11.1, …), 351 product×package rows across 81 product lines (Container bci/ruby, Container suse/rmt-server, … (81 product lines)): Known Affected 231, Fixed 103, Known Not Affected 17. | https://www.suse.com/security/cve/CVE-2020-36327/ |
ubuntu
|
medium | CVE-2020-36327 medium priority: Ubuntu including 1 source packages (bundler), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 10, needs-triage 4, ignored 2. | https://ubuntu.com/security/CVE-2020-36327 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| bundler | bundler | >= 1.16.0, < 2.2.10 | cpe:2.3:a:bundler:bundler:*:*:*:*:*:ruby:*:* |
| bundler | bundler | >= 2.2.11, <= 2.2.16 | cpe:2.3:a:bundler:bundler:*:*:*:*:*:ruby:*:* |
| fedoraproject | fedora | 34 | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |
| microsoft | package_manager_configurations | — | cpe:2.3:a:microsoft:package_manager_configurations:-:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://bundler.io/blog/2021/02/15/a-more-secure-bundler-we-fixed-our-source-priorities.html | Vendor Advisory |
| https://github.com/rubygems/rubygems/issues/3982 | Exploit Issue Tracking Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MWXHK5UUHVSHF7HTHMX6JY3WXDVNIHSL/ | |
| https://mensfeld.pl/2021/02/rubygems-dependency-confusion-attack-side-of-things/ | Third Party Advisory |
| https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-24105 | Patch Vendor Advisory |
| https://www.zofrex.com/blog/2021/04/29/bundler-still-vulnerable-dependency-confusion-cve-2020-36327/ | Exploit Third Party Advisory |