{"cve":"CVE-2020-29509","nvd":{"published":"2020-12-14T20:15:13.060","modified":"2026-06-17T03:11:23.340","status":"Modified","description":"The encoding/xml package in Go (all versions) does not correctly preserve the semantics of attribute namespace prefixes during tokenization round-trips, which allows an attacker to craft inputs that behave in conflicting ways during different stages of processing in affected downstream applications.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","score":5.6},"cwes":["CWE-115"],"references":["https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md","https://security.netapp.com/advisory/ntap-20210129-0006/","https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md","https://security.netapp.com/advisory/ntap-20210129-0006/"],"products":["golang:go","netapp:trident"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2020-29509","score":0.02099,"percentile":0.81699,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-xhqq-x44f-9fgg","url":"https://osv.dev/vulnerability/GHSA-xhqq-x44f-9fgg","summary":"Authentication Bypass in github.com/russellhaering/gosaml2","modified":"2026-09-10T03:49:12.821542716Z","packages":[{"ecosystem":"Go","name":"github.com/russellhaering/gosaml2","purl":"pkg:golang/github.com/russellhaering/gosaml2","ranges":["<0.6.0"],"fixed":["0.6.0"]}]},{"id":"GO-2021-0060","url":"https://osv.dev/vulnerability/GO-2021-0060","summary":"Authentication bypass in github.com/russellhaering/gosaml2","modified":"2026-02-04T04:13:59.892554Z","packages":[{"ecosystem":"Go","name":"github.com/russellhaering/gosaml2","purl":"pkg:golang/github.com/russellhaering/gosaml2","ranges":["<0.6.0"],"fixed":["0.6.0"]}]}],"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."]}