This high-severity CVE scores 7.5 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.8%, top 45% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
A fix is available — apply it.
Impact:
A bad regular expression is generated any time you have multiple sequential optional groups (curly brace syntax), such as {a}{b}{c}:z. The generated regex grows exponentially with the number of groups, causing denial of service.
Patches:
Fixed in version 8.4.0.
Workarounds:
Limit the number of sequential optional groups in route patterns. Avoid passing user-controlled input as route patterns.
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
March 26, 2026
September 17, 2026
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Red Hat Security Advisory: RHOAI 2.25.11 - Red Hat OpenShift AI
Red Hat Security Advisory: Migration Toolkit for Applications
Red Hat Security Advisory: Red Hat Edge Manager Version 1.1.3 Security Update
Red Hat Security Advisory: Red Hat Edge Manager Version 1.1.3 Security Update
Red Hat Security Advisory: Red Hat Edge Manager Version 1.0.3 Security Update
Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.6 Container Release Update
Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.5 Product Security and Bug Fix Update
Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.6 Product Security and Bug Fix Update
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| node-path-to-regexp | 6.2.0-1 ... 8.4.2-1 (9 versions) |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| node-path-to-regexp | 6.2.1-1 ... 8.4.2-1 (6 versions) |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| node-path-to-regexp | 6.3.0-1, 8.3.0-1, 8.4.0-1, 8.4.1-1, 8.4.2-1 |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| node-path-to-regexp | 6.3.0-1, 8.3.0-1 |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| path-to-regexp | — |
| — |
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 231 total refreshes for this CVE.
Debian:11:node-path-to-regexp · npm:path-to-regexp
redhat:RHSA-2026:10175 · redhat:RHSA-2026:10153 · redhat:RHSA-2026:13545
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-4926
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