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CVE-2026-4923

Impact: When 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. Unsafe examples: /*foo-*bar-:baz /*a-:b-*c-:d /x/*a-:b/*c/y Safe examples: /*foo-:bar /*foo-:bar-*baz Patches: Upgrade to version 8.4.0. Workarounds: If you are using multiple wildcard parameters, you can check the regex output with a too
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:95fd0e6ed882e86164dcc78c2504912b439c7635f4e0a864cb1619eddcce580a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","packageURL":"pkg:npm/path-to-regexp","product":"path-to-regexp","vendor":"path-to-regexp","versions":[{"lessThan":"8.4.0","status":"affected","version":"8.0.0","versionType":"semver"},{"status":"unaffected","version":"8.4.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:316344b6cc6a2cd10c8a00d60feab175510123b204483bb33c3e0f0b6063bdea · sha256:337cb792c6facfa4… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":5.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:316344b6cc6a2cd10c8a00d60feab175510123b204483bb33c3e0f0b6063bdea · sha256:337cb792c6facfa4… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-1333","description":"CWE-1333: Inefficient Regular Expression Complexity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:316344b6cc6a2cd10c8a00d60feab175510123b204483bb33c3e0f0b6063bdea · sha256:337cb792c6facfa4… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://cna.openjsf.org/security-advisories.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:316344b6cc6a2cd10c8a00d60feab175510123b204483bb33c3e0f0b6063bdea · sha256:337cb792c6facfa4… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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