GHSA-hv5j-3h9f-99c2 · Severity: high · Ecosystem: rubygems — Ruby URI component ReDoS issue
A ReDoS issue was discovered in the URI component through 0.12.0 in Ruby through 3.2.1. The URI parser mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing strings to URI objects. The fixed versions are 0.12.1, 0.11.1, 0.10.2 and 0.10.0.1.
Conclusion & alert: CVE-2023-28755 is rated Moderate Risk (52.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.64%). Core evidence: EPSS rose +2.33% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule 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 | 0.31% | 2.64% | +2.33% |
| 2 | 2026-06-10 | 0.37% | 0.31% | -0.05% |
| 3 | 2026-06-08 | — | 0.37% | — |
Full EPSS history (51 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.3 | 3.1 | MEDIUM |
|
3.9 | 1.4 | [email protected] |
| 5.3 | 3.1 | MEDIUM |
|
3.9 | 1.4 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
GHSA-hv5j-3h9f-99c2 · Severity: high · Ecosystem: rubygems — Ruby URI component ReDoS issue
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2023-28755: 1 source package rows (ruby); 7 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 7, open 0. | https://security.alpinelinux.org/vuln/CVE-2023-28755 |
debian
|
not yet assigned | CVE-2023-28755 not yet assigned priority: Debian including 4 source packages (jruby, ruby2.7, ruby3.1, rubygems), 11 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 9, open 2. | https://security-tracker.debian.org/tracker/CVE-2023-28755 |
gentoo
|
normal | CVE-2023-28755: 1 GLSA(s) (202401-27), 1 atom(s) (dev-lang/ruby); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-28755 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2023-28755 |
suse
|
medium | CVE-2023-28755 severity moderate: SUSE including 364 source package names (2.17-17.3:libruby2_5-2_5-2.5.9-150000.4.29.1, 2.17-17.3:ruby2.5-2.5.9-150000.4.29.1, …), 990 product×package rows across 196 product lines (Container bci/ruby, Container suse/rmt-server, … (196 product lines)): Fixed 681, Known Affected 231, Known Not Affected 78. | https://www.suse.com/security/cve/CVE-2023-28755/ |
ubuntu
|
medium | CVE-2023-28755 medium priority: Ubuntu including 9 source packages (jruby, ruby1.9.1, …), 117 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 72, ignored 17, needs-triage 10, released 10, not-affected 5, needed 3. | https://ubuntu.com/security/CVE-2023-28755 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| ruby-lang | uri | <= 0.10.0 | cpe:2.3:a:ruby-lang:uri:*:*:*:*:*:ruby:*:* |
| ruby-lang | uri | 0.10.1 | cpe:2.3:a:ruby-lang:uri:0.10.1:*:*:*:*:ruby:*:* |
| ruby-lang | uri | 0.11.0 | cpe:2.3:a:ruby-lang:uri:0.11.0:*:*:*:*:ruby:*:* |
| ruby-lang | uri | 0.12.0 | cpe:2.3:a:ruby-lang:uri:0.12.0:*:*:*:*:ruby:*:* |
| debian | debian_linux | 10.0 | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
| fedoraproject | fedora | 36 | cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* |
| fedoraproject | fedora | 37 | cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* |
| fedoraproject | fedora | 38 | cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* |