Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/24301?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/24301?format=api", "vulnerability_id": "VCID-vzcu-mpsr-qbgm", "summary": "path-to-regexp vulnerable to Regular Expression Denial of Service via multiple route parameters\n### Impact\n\nA bad regular expression is generated any time you have three or more parameters within a single segment, separated by something that is not a period (`.`). For example, `/:a-:b-:c` or `/:a-:b-:c-:d`. The backtrack protection added in `path-to-regexp@0.1.12` only prevents ambiguity for two parameters. With three or more, the generated lookahead does not block single separator characters, so capture groups overlap and cause catastrophic backtracking.\n\n### Patches\n\nUpgrade to [path-to-regexp@0.1.13](https://github.com/pillarjs/path-to-regexp/releases/tag/v.0.1.13)\n\nCustom regex patterns in route definitions (e.g., `/:a-:b([^-/]+)-:c([^-/]+)`) are not affected because they override the default capture group.\n\n### Workarounds\n\nAll versions can be patched by providing a custom regular expression for parameters after the first in a single segment. As long as the custom regular expression does not match the text before the parameter, you will be safe. For example, change `/:a-:b-:c` to `/:a-:b([^-/]+)-:c([^-/]+)`.\n\nIf paths cannot be rewritten and versions cannot be upgraded, another alternative is to limit the URL length.\n\n### References\n\n- [GHSA-9wv6-86v2-598j](https://github.com/advisories/GHSA-9wv6-86v2-598j)\n- [Detailed blog post: ReDoS the web](https://blakeembrey.com/posts/2024-09-web-redos/)", "aliases": [ { "alias": "CVE-2026-4867" }, { "alias": "GHSA-37ch-88jc-xwx2" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/932508?format=api", "purl": "pkg:deb/debian/node-path-to-regexp@1.0.1-1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/node-path-to-regexp@1.0.1-1%3Fdistro=trixie" }, { "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/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/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/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/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/67472?format=api", "purl": "pkg:npm/path-to-regexp@0.1.13", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.1.13" } ], "affected_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/577062?format=api", "purl": "pkg:npm/path-to-regexp@0.0.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2xgj-yjdf-nqeh" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" }, { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.0.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/577063?format=api", "purl": "pkg:npm/path-to-regexp@0.0.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2xgj-yjdf-nqeh" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" }, { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.0.2" }, { "url": "http://public2.vulnerablecode.io/api/packages/577064?format=api", "purl": "pkg:npm/path-to-regexp@0.1.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2xgj-yjdf-nqeh" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" }, { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.1.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/577065?format=api", "purl": "pkg:npm/path-to-regexp@0.1.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2xgj-yjdf-nqeh" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" }, { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.1.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/577066?format=api", "purl": "pkg:npm/path-to-regexp@0.1.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2xgj-yjdf-nqeh" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" }, { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.1.2" }, { "url": "http://public2.vulnerablecode.io/api/packages/577067?format=api", "purl": "pkg:npm/path-to-regexp@0.1.3", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2xgj-yjdf-nqeh" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" }, { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.1.3" }, { "url": "http://public2.vulnerablecode.io/api/packages/577068?format=api", "purl": "pkg:npm/path-to-regexp@0.1.4", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2xgj-yjdf-nqeh" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" }, { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.1.4" }, { "url": "http://public2.vulnerablecode.io/api/packages/577069?format=api", "purl": "pkg:npm/path-to-regexp@0.1.5", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2xgj-yjdf-nqeh" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" }, { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.1.5" }, { "url": "http://public2.vulnerablecode.io/api/packages/577070?format=api", "purl": "pkg:npm/path-to-regexp@0.1.6", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2xgj-yjdf-nqeh" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" }, { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.1.6" }, { "url": "http://public2.vulnerablecode.io/api/packages/577071?format=api", "purl": "pkg:npm/path-to-regexp@0.1.7", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2xgj-yjdf-nqeh" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" }, { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.1.7" }, { "url": "http://public2.vulnerablecode.io/api/packages/577072?format=api", "purl": "pkg:npm/path-to-regexp@0.1.8", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2xgj-yjdf-nqeh" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" }, { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.1.8" }, { "url": "http://public2.vulnerablecode.io/api/packages/577073?format=api", "purl": "pkg:npm/path-to-regexp@0.1.9", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2xgj-yjdf-nqeh" }, { "vulnerability": "VCID-r95c-k4nq-jbd1" }, { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.1.9" }, { "url": "http://public2.vulnerablecode.io/api/packages/48561?format=api", "purl": "pkg:npm/path-to-regexp@0.1.10", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2xgj-yjdf-nqeh" }, { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.1.10" }, { "url": "http://public2.vulnerablecode.io/api/packages/733095?format=api", "purl": "pkg:npm/path-to-regexp@0.1.11", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-2xgj-yjdf-nqeh" }, { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.1.11" }, { "url": "http://public2.vulnerablecode.io/api/packages/51278?format=api", "purl": "pkg:npm/path-to-regexp@0.1.12", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-vzcu-mpsr-qbgm" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/path-to-regexp@0.1.12" } ], "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4867.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "5.3", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4867.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2026-4867", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.0005", "scoring_system": "epss", "scoring_elements": "0.1546", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.0005", "scoring_system": "epss", "scoring_elements": "0.15468", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.0005", "scoring_system": "epss", "scoring_elements": "0.15418", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.0005", "scoring_system": "epss", "scoring_elements": "0.1533", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.0005", "scoring_system": "epss", "scoring_elements": "0.15529", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.0005", "scoring_system": "epss", "scoring_elements": "0.15334", "published_at": "2026-04-26T12:55:00Z" }, { "value": "0.0005", "scoring_system": "epss", "scoring_elements": "0.15337", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.0005", "scoring_system": "epss", "scoring_elements": "0.15298", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.0005", "scoring_system": "epss", "scoring_elements": "0.15247", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.0005", "scoring_system": "epss", "scoring_elements": "0.15243", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.0005", "scoring_system": "epss", "scoring_elements": "0.15325", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.0005", "scoring_system": "epss", "scoring_elements": "0.15391", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.0005", "scoring_system": "epss", "scoring_elements": "0.1543", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00054", "scoring_system": "epss", "scoring_elements": "0.16749", "published_at": "2026-05-07T12:55:00Z" }, { "value": "0.00054", "scoring_system": "epss", "scoring_elements": "0.16632", "published_at": "2026-05-05T12:55:00Z" }, { "value": "0.00054", "scoring_system": "epss", "scoring_elements": "0.16762", "published_at": "2026-04-29T12:55:00Z" }, { "value": "0.00054", "scoring_system": "epss", "scoring_elements": "0.16855", "published_at": "2026-05-09T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-4867" }, { "reference_url": "https://blakeembrey.com/posts/2024-09-web-redos", "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/2026-03-26T16:52:08Z/" } ], "url": "https://blakeembrey.com/posts/2024-09-web-redos" }, { "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/2026-03-26T16:52:08Z/" } ], "url": "https://cna.openjsf.org/security-advisories.html" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-4867", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-4867" }, { "reference_url": "https://github.com/advisories/GHSA-9wv6-86v2-598j", "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/2026-03-26T16:52:08Z/" } ], "url": "https://github.com/advisories/GHSA-9wv6-86v2-598j" }, { "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/releases/tag/v.0.1.13", "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/releases/tag/v.0.1.13" }, { "reference_url": "https://github.com/pillarjs/path-to-regexp/security/advisories/GHSA-37ch-88jc-xwx2", "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-37ch-88jc-xwx2" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4867", "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-2026-4867" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451783", "reference_id": "2451783", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451783" }, { "reference_url": "https://github.com/advisories/GHSA-37ch-88jc-xwx2", "reference_id": "GHSA-37ch-88jc-xwx2", "reference_type": "", "scores": [ { "value": "HIGH", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-37ch-88jc-xwx2" } ], "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": 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": "5.3 - 8.9", "exploitability": "0.5", "weighted_severity": "8.0", "risk_score": 4.0, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-vzcu-mpsr-qbgm" }