{"cve":"CVE-2026-56860","nvd":{"published":"2026-08-13T22:17:22.440","modified":"2026-09-03T16:37:52.170","status":"Awaiting Analysis","description":"Previously, resolving relative paths containing parent directory ('..') segments performed string conversions and buffer rewrites on each step, resulting in quadratic time complexity and high memory allocation overhead. Now, path resolution operates on a byte buffer using index-based backtracking for '..' segments, eliminating the quadratic time complexity and significantly reducing memory allocations.","cvss_v4":null,"cvss_v3":{"version":"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},"cwes":["CWE-407"],"references":["https://go.dev/cl/803681","https://go.dev/issue/80494","https://groups.google.com/g/golang-announce/c/94pEornpRlI","https://pkg.go.dev/vuln/GO-2026-6218"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:48:17.459049833+00:00"},"epss":{"cve":"CVE-2026-56860","score":0.0055,"percentile":0.46041,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GO-2026-6218","url":"https://osv.dev/vulnerability/GO-2026-6218","summary":"Avoid quadratic complexity in resolvePath in net/url","modified":"2026-10-20T10:42:24.481986669Z","packages":[{"ecosystem":"Go","name":"stdlib","purl":"pkg:golang/stdlib","ranges":["<1.25.13",">=1.26.0-0 <1.26.6",">=1.27.0-0 <1.27.0-rc.3"],"fixed":["1.25.13","1.26.6","1.27.0-rc.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}