{"cve":"CVE-2026-113729","nvd":{"published":"2026-10-20T22:19:29.887","modified":"2026-10-22T16:47:38.403","status":"Awaiting Analysis","description":"Moov signedxml is a pure Go library for processing signed XML documents. Prior to 1.4.1, ExclusiveCanonicalization in exclusivecanonicalization.go copies the complete accumulated namespace map at every nested element before reference digest or signature checks. Attacker-controlled XML containing deeply nested elements with many unused namespace declarations causes quadratic allocation growth with depth and linear growth with prefixes per level, allowing a comparatively small document to consume multiple gigabytes of memory and terminate the process. The condition is reachable through ValidateReferences without a valid signature, matching certificate, or prior authentication, and it does not bypass signature verification. This issue is fixed in version 1.4.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400","CWE-407","CWE-770"],"references":["https://github.com/moov-io/signedxml/commit/da2cd6126c4c53b7e59a367d287786e6f6a2d0d3","https://github.com/moov-io/signedxml/releases/tag/v1.4.1","https://github.com/moov-io/signedxml/security/advisories/GHSA-5588-rp99-5fjh"],"products":[],"source":"nvd","synced_at":"2026-10-23T16:39:26.291718493+00:00"},"epss":{"cve":"CVE-2026-113729","score":0.00459,"percentile":0.395,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-5588-rp99-5fjh","url":"https://osv.dev/vulnerability/GHSA-5588-rp99-5fjh","summary":"Moov signedxml: Unauthenticated denial of service in exclusive XML canonicalization","modified":"2026-10-21T16:45:04.150818554Z","packages":[{"ecosystem":"Go","name":"github.com/moov-io/signedxml","purl":"pkg:golang/github.com/moov-io/signedxml","ranges":["<1.4.1"],"fixed":["1.4.1"]}]}],"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."]}