Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/23228?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/23228?format=api", "vulnerability_id": "VCID-1vjw-mm86-k7gn", "summary": "path-to-regexp vulnerable to Denial of Service via sequential optional groups\n### Impact\n\nA 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.\n\n### Patches\n\nFixed in version 8.4.0.\n\n### Workarounds\n\nLimit the number of sequential optional groups in route patterns. Avoid passing user-controlled input as route patterns.", "aliases": [ { "alias": "CVE-2026-4926" }, { "alias": "GHSA-j3q9-mxjg-w52f" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/932509?format=api", "purl": "pkg:deb/debian/node-path-to-regexp@8.4.0-1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/node-path-to-regexp@8.4.0-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/932505?format=api", "purl": "pkg:deb/debian/node-path-to-regexp@8.4.1-1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/node-path-to-regexp@8.4.1-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/1103678?format=api", "purl": "pkg:deb/debian/node-path-to-regexp@8.4.2-1", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/node-path-to-regexp@8.4.2-1" }, { "url": "http://public2.vulnerablecode.io/api/packages/1103009?format=api", "purl": "pkg:deb/debian/node-path-to-regexp@8.4.2-1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/node-path-to-regexp@8.4.2-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/66065?format=api", "purl": "pkg:npm/path-to-regexp@8.4.0", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@8.4.0" } ], "affected_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/932503?format=api", "purl": "pkg:deb/debian/node-path-to-regexp@6.2.0-1?distro=trixie", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1vjw-mm86-k7gn" }, { "vulnerability": "VCID-366w-k4rs-v7d3" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/node-path-to-regexp@6.2.0-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/994728?format=api", "purl": "pkg:deb/debian/node-path-to-regexp@6.2.0-1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1vjw-mm86-k7gn" }, { "vulnerability": "VCID-366w-k4rs-v7d3" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/node-path-to-regexp@6.2.0-1" }, { "url": "http://public2.vulnerablecode.io/api/packages/932504?format=api", "purl": "pkg:deb/debian/node-path-to-regexp@6.2.1-1?distro=trixie", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1vjw-mm86-k7gn" }, { "vulnerability": "VCID-366w-k4rs-v7d3" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/node-path-to-regexp@6.2.1-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/994729?format=api", "purl": "pkg:deb/debian/node-path-to-regexp@6.2.1-1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1vjw-mm86-k7gn" }, { "vulnerability": "VCID-366w-k4rs-v7d3" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/node-path-to-regexp@6.2.1-1" }, { "url": "http://public2.vulnerablecode.io/api/packages/994730?format=api", "purl": "pkg:deb/debian/node-path-to-regexp@6.3.0-1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1vjw-mm86-k7gn" }, { "vulnerability": "VCID-366w-k4rs-v7d3" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/node-path-to-regexp@6.3.0-1" }, { "url": "http://public2.vulnerablecode.io/api/packages/932506?format=api", "purl": "pkg:deb/debian/node-path-to-regexp@6.3.0-1?distro=trixie", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1vjw-mm86-k7gn" }, { "vulnerability": "VCID-366w-k4rs-v7d3" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/node-path-to-regexp@6.3.0-1%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/48565?format=api", "purl": "pkg:npm/path-to-regexp@8.0.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1vjw-mm86-k7gn" }, { "vulnerability": "VCID-366w-k4rs-v7d3" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@8.0.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/1082496?format=api", "purl": "pkg:npm/path-to-regexp@8.1.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1vjw-mm86-k7gn" }, { "vulnerability": "VCID-366w-k4rs-v7d3" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@8.1.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/1082497?format=api", "purl": "pkg:npm/path-to-regexp@8.2.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1vjw-mm86-k7gn" }, { "vulnerability": "VCID-366w-k4rs-v7d3" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@8.2.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/1082498?format=api", "purl": "pkg:npm/path-to-regexp@8.3.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-1vjw-mm86-k7gn" }, { "vulnerability": "VCID-366w-k4rs-v7d3" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@8.3.0" } ], "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4926.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4926.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2026-4926", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16236", "published_at": "2026-04-26T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.1624", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16347", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16313", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16292", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16356", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16417", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16457", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16472", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16469", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16414", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16328", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.00052", "scoring_system": "epss", "scoring_elements": "0.16531", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17771", "published_at": "2026-05-14T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17646", "published_at": "2026-04-29T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17503", "published_at": "2026-05-05T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17595", "published_at": "2026-05-07T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17694", "published_at": "2026-05-09T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17655", "published_at": "2026-05-11T12:55:00Z" }, { "value": "0.00057", "scoring_system": "epss", "scoring_elements": "0.17692", "published_at": "2026-05-12T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-4926" }, { "reference_url": "https://cna.openjsf.org/security-advisories.html", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-27T19:44:44Z/" } ], "url": "https://cna.openjsf.org/security-advisories.html" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-4926", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-4926" }, { "reference_url": "https://github.com/pillarjs/path-to-regexp", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/pillarjs/path-to-regexp" }, { "reference_url": "https://github.com/pillarjs/path-to-regexp/security/advisories/GHSA-j3q9-mxjg-w52f", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "HIGH", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/pillarjs/path-to-regexp/security/advisories/GHSA-j3q9-mxjg-w52f" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4926", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4926" }, { "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1132020", "reference_id": "1132020", "reference_type": "", "scores": [], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1132020" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451867", "reference_id": "2451867", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451867" }, { "reference_url": "https://github.com/advisories/GHSA-j3q9-mxjg-w52f", "reference_id": "GHSA-j3q9-mxjg-w52f", "reference_type": "", "scores": [ { "value": "HIGH", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-j3q9-mxjg-w52f" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2026:10153", "reference_id": "RHSA-2026:10153", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2026:10153" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2026:10172", "reference_id": "RHSA-2026:10172", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2026:10172" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2026:10175", "reference_id": "RHSA-2026:10175", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2026:10175" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2026:13545", "reference_id": "RHSA-2026:13545", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2026:13545" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2026:13826", "reference_id": "RHSA-2026:13826", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2026:13826" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2026:9385", "reference_id": "RHSA-2026:9385", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2026:9385" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2026:9742", "reference_id": "RHSA-2026:9742", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2026:9742" } ], "weaknesses": [ { "cwe_id": 1333, "name": "Inefficient Regular Expression Complexity", "description": "The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles." }, { "cwe_id": 400, "name": "Uncontrolled Resource Consumption", "description": "The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources." }, { "cwe_id": 937, "name": "OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities", "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013." }, { "cwe_id": 1035, "name": "OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities", "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017." } ], "exploits": [], "severity_range_score": "7.0 - 8.9", "exploitability": "0.5", "weighted_severity": "8.0", "risk_score": 4.0, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-1vjw-mm86-k7gn" }