{"id":"EUVD-2026-16322","revision":null,"records":[{"revision":"466bac252ff148f298b4c864a36373b7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-4923","aliases":[],"title":"path-to-regexp vulnerable to Regular Expression Denial of Service via multiple wildcards","description":"Impact:\n\nWhen using multiple wildcards, combined with at least one parameter, a regular expression can be generated that is vulnerable to ReDoS. 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This backtracking vulnerability requires the second wildcard to be somewhere other than the end of the path.\n\nUnsafe examples:\n\n/*foo-*bar-:baz\n/*a-:b-*c-:d\n/x/*a-:b/*c/y\n\nSafe examples:\n\n/*foo-:bar\n/*foo-:bar-*baz\n\nPatches:\n\nUpgrade to version 8.4.0.\n\nWorkarounds:\n\nIf you are using multiple wildcard parameters, you can check the regex output with a tool such as https://makenowjust-labs.github.io/recheck/playground/ to confirm whether a path is vulnerable.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9,"severity":null}],"references":["https://cna.openjsf.org/security-advisories.html"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-16322","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Mar 26, 2026, 7:02:00 PM","dateUpdated":"Mar 27, 2026, 1:58:03 PM"},"relatedAdvisories":[{"id":"WID-SEC-W-2026-1407","title":"IBM App Connect Enterprise Certified Container: Mehrere Schwachstellen","vulnerabilityIds":["CVE-2026-26013","CVE-2026-27142","CVE-2026-28277","CVE-2026-28684","CVE-2026-32288","CVE-2026-33151","CVE-2026-33349","CVE-2026-33532","CVE-2026-33891","CVE-2026-33894","CVE-2026-33895","CVE-2026-33896","CVE-2026-33916","CVE-2026-34601","CVE-2026-35469","CVE-2026-39406","CVE-2026-39407","CVE-2026-39408","CVE-2026-39409","CVE-2026-39410","CVE-2026-39983","CVE-2026-40175","CVE-2026-40347","CVE-2026-40895","CVE-2026-41238","CVE-2026-41239","CVE-2026-41240","CVE-2026-4923","CVE-2026-4926"]},{"id":"WID-SEC-W-2026-3046","title":"IBM Concert: Mehrere Schwachstellen","vulnerabilityIds":["CVE-2019-19921","CVE-2021-23337","CVE-2024-3651","CVE-2024-39338","CVE-2024-45590","CVE-2025-13465","CVE-2025-15284","CVE-2025-15599","CVE-2025-22874","CVE-2025-47273","CVE-2025-47907","CVE-2025-52881","CVE-2025-53643","CVE-2025-55184","CVE-2025-58056","CVE-2025-58188","CVE-2025-58189","CVE-2025-61723","CVE-2025-61730","CVE-2025-64649","CVE-2025-64756","CVE-2025-67221","CVE-2025-68121","CVE-2025-68146","CVE-2026-0540","CVE-2026-2327","CVE-2026-23490","CVE-2026-23897","CVE-2026-2391","CVE-2026-23949","CVE-2026-24486","CVE-2026-25528","CVE-2026-25547","CVE-2026-25639","CVE-2026-25990","CVE-2026-26007","CVE-2026-26019","CVE-2026-26996","CVE-2026-27142","CVE-2026-27212","CVE-2026-27699","CVE-2026-27903","CVE-2026-27904","CVE-2026-28684","CVE-2026-29063","CVE-2026-29181","CVE-2026-2950","CVE-2026-31808","CVE-2026-31900","CVE-2026-32274","CVE-2026-32288","CVE-2026-32597","CVE-2026-32630","CVE-2026-32887","CVE-2026-32952","CVE-2026-33186","CVE-2026-33532","CVE-2026-33750","CVE-2026-33814","CVE-2026-33816","CVE-2026-33916","CVE-2026-34043","CVE-2026-34073","CVE-2026-34077","CVE-2026-3520","CVE-2026-35469","CVE-2026-35515","CVE-2026-3627","CVE-2026-39823","CVE-2026-39825","CVE-2026-39826","CVE-2026-39892","CVE-2026-39984","CVE-2026-40175","CVE-2026-40179","CVE-2026-40181","CVE-2026-40190","CVE-2026-40347","CVE-2026-41066","CVE-2026-41182","CVE-2026-41238","CVE-2026-41239","CVE-2026-41240","CVE-2026-41305","CVE-2026-41324","CVE-2026-41425","CVE-2026-41481","CVE-2026-41488","CVE-2026-41602","CVE-2026-41636","CVE-2026-42151","CVE-2026-42154","CVE-2026-42198","CVE-2026-42211","CVE-2026-42338","CVE-2026-42342","CVE-2026-42561","CVE-2026-42577","CVE-2026-43870","CVE-2026-44405","CVE-2026-44431","CVE-2026-44432","CVE-2026-44486","CVE-2026-44487","CVE-2026-44488","CVE-2026-44492","CVE-2026-44494","CVE-2026-44496","CVE-2026-44728","CVE-2026-4539","CVE-2026-45409","CVE-2026-45736","CVE-2026-46625","CVE-2026-4800","CVE-2026-4923","CVE-2026-4926","CVE-2026-7246","CVE-2026-8723"]},{"id":"RHSA-2026:24841","title":"Red Hat Security Advisory: Red Hat Developer Hub 1.10.0 release.","vulnerabilityIds":["CVE-2026-2950","CVE-2026-4923","CVE-2026-22036","CVE-2026-27601","CVE-2026-31988","CVE-2026-32235","CVE-2026-33349"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-16322","identifiers":["EUVD-2026-16322","CVE-2026-4923"]},"retained":false,"historicalAffected":[]},{"revision":"3b78d827d2ef45ee95400bd09723ec6c","observedAt":"2026-10-25T12:17:32.273+00:00","statement":{"source":"nvd","id":"CVE-2026-4923","aliases":[],"title":"Impact:","description":"Impact:\n\nWhen using multiple wildcards, combined with at least one parameter, a regular expression can be generated that is vulnerable to ReDoS. This backtracking vulnerability requires the second wildcard to be somewhere other than the end of the path.\n\nUnsafe examples:\n\n/*foo-*bar-:baz\n/*a-:b-*c-:d\n/x/*a-:b/*c/y\n\nSafe examples:\n\n/*foo-:bar\n/*foo-:bar-*baz\n\nPatches:\n\nUpgrade to version 8.4.0.\n\nWorkarounds:\n\nIf you are using multiple wildcard parameters, you can check the regex output with a tool such as https://makenowjust-labs.github.io/recheck/playground/ to confirm whether a path is vulnerable.","state":0,"publishedAt":"2026-03-26T19:17:08.187+00:00","modifiedAt":"2026-06-17T10:57:27.74+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · ce714d77-add3-4f53-aff5-83d477b104bb · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9,"severity":"MEDIUM"}],"references":["https://cna.openjsf.org/security-advisories.html"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-4923","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-1333"],"productCriteria":["cpe:2.3:a:pillarjs:path-to-regexp:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-03-26T19:17:08.187","lastModified":"2026-06-17T10:57:27.740"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-4923","identifiers":["CVE-2026-4923"]},"retained":false,"historicalAffected":[]},{"revision":"51d8b0d04edd46edad4d9a98dc343336","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-27v5-c462-wpq7","aliases":["CVE-2026-4923"],"title":"path-to-regexp vulnerable to Regular Expression Denial of Service via multiple wildcards","description":"### Impact\n\nWhen using multiple wildcards, combined with at least one parameter, a regular expression can be generated that is vulnerable to ReDoS. This backtracking vulnerability requires the second wildcard to be somewhere other than the end of the path.\n\n**Unsafe examples:**\n\n```\n/*foo-*bar-:baz\n/*a-:b-*c-:d\n/x/*a-:b/*c/y\n```\n\n**Safe examples:**\n\n```\n/*foo-:bar\n/*foo-:bar-*baz\n```\n\n### Patches\n\nUpgrade to version `8.4.0`.\n\n### Workarounds\n\nIf developers are using multiple wildcard parameters, they can check the regex output with a tool such as https://makenowjust-labs.github.io/recheck/playground/ to confirm whether a path is vulnerable.","state":0,"publishedAt":"2026-03-27T22:23:52+00:00","modifiedAt":"2026-09-10T03:50:36.1748568+00:00","affected":[{"ecosystem":"npm","name":"path-to-regexp","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"8.0.0"},{"kind":"fixed","version":"8.4.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/pillarjs/path-to-regexp/security/advisories/GHSA-27v5-c462-wpq7","https://nvd.nist.gov/vuln/detail/CVE-2026-4923","https://cna.openjsf.org/security-advisories.html","https://github.com/pillarjs/path-to-regexp","https://makenowjust-labs.github.io/recheck/playground"],"sourceUrl":"https://github.com/advisories/GHSA-27v5-c462-wpq7","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-27v5-c462-wpq7","identifiers":["GHSA-27v5-c462-wpq7","CVE-2026-4923"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-b4eb881ceb334bb9a445c00e5b571b3d","complete":false,"records":13821,"lastAttemptAt":"2026-11-15T16:53:07.4417863+00:00","lastSuccessAt":"2026-11-15T16:53:07.434+00:00","error":"43 identifier lookups failed; latest failures include AccessDenied (HTTP 403). Other identifiers were checked independently.","lastVerifiedAt":"2026-11-15T16:53:07.434+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13831,"expectedIdentifiers":13874,"failedIdentifiers":43},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-15T16:44:15.3023707+00:00","complete":true,"records":1125,"lastAttemptAt":"2026-11-15T16:44:15.3023707+00:00","lastSuccessAt":"2026-11-15T16:44:15.4675299+00:00","error":null,"lastVerifiedAt":"2026-11-15T16:44:15.4675303+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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