{"id":"CVE-2020-29510","aliases":["BIT-golang-2020-29510","DEBIAN-CVE-2020-29510","EUVD-2020-21877","GHSA-p6mv-vmpw-j23r","UBUNTU-CVE-2020-29510"],"status":"published","title":"The encoding/xml package in Go versions 1.15 and earlier does not correctly preserve the...","description":"The encoding/xml package in Go versions 1.15 and earlier does not correctly preserve the semantics of directives 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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.02072,"percentile":0.81604,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-115"],"published":"2020-12-14T19:57:44Z","modified":"2026-10-24T10:30:59Z","fixes":[{"ecosystem":"Bitnami","package":"golang","fixed_in":["1.15.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"golang","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.15.1"}]}]},{"source":"osv","ecosystem":"Debian:11","package":"golang-1.15","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.15.15-1","1.15.15-1~deb11u1","1.15.15-1~deb11u2","1.15.15-1~deb11u3","1.15.15-1~deb11u4","1.15.15-2","1.15.15-3","1.15.15-4","1.15.15-5","1.15.9-6"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"golang-1.10","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.4-2ubuntu1~14.04.1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"golang-1.10","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.4-2ubuntu1~16.04.1","1.10.4-2ubuntu1~16.04.2"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"golang-1.6","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6-0ubuntu1","1.6-0ubuntu2","1.6-0ubuntu3","1.6-0ubuntu4","1.6-0ubuntu5","1.6.1-0ubuntu1","1.6.2-0ubuntu5~16.04","1.6.2-0ubuntu5~16.04.2","1.6.2-0ubuntu5~16.04.3","1.6.2-0ubuntu5~16.04.4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"golang-1.13","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.13.8-1ubuntu1~16.04.2","1.13.8-1ubuntu1~16.04.3","1.13.8-1ubuntu1~16.04.3+esm2","1.13.8-1ubuntu1~16.04.3+esm3"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"golang-1.10","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10~rc1-1","1.10~rc1-1ubuntu1","1.10~rc1-2ubuntu1","1.10~rc2-1ubuntu1","1.10-1ubuntu1","1.10.1-1ubuntu2","1.10.4-2ubuntu1~18.04.1","1.10.4-2ubuntu1~18.04.2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"golang-1.13","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.13.8-1ubuntu1~18.04.2","1.13.8-1ubuntu1~18.04.3","1.13.8-1ubuntu1~18.04.4","1.13.8-1ubuntu1~18.04.4+esm1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"golang-1.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.3-2ubuntu1","1.8.3-2ubuntu1.18.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"golang-1.9","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.1-2ubuntu1","1.9.2-1ubuntu1","1.9.2-3ubuntu1","1.9.3-1ubuntu1","1.9.4-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"golang-1.13","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.13.1-1ubuntu1","1.13.3-1ubuntu1","1.13.4-1ubuntu1","1.13.5-1ubuntu1","1.13.6-1ubuntu1","1.13.6-2ubuntu1","1.13.7-1ubuntu1","1.13.8-1ubuntu1","1.13.8-1ubuntu1.1","1.13.8-1ubuntu1.2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"golang-1.14","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.14~beta1-1","1.14~beta1-2","1.14~rc1-1","1.14-1","1.14.1-1","1.14.2-1","1.14.2-1ubuntu1","1.14.3-2ubuntu2~20.04.1","1.14.3-2ubuntu2~20.04.2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"golang-1.13","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.13.8-1ubuntu2","1.13.8-1ubuntu2.22.04.1","1.13.8-1ubuntu2.22.04.1+esm1","1.13.8-1ubuntu2.22.04.2"]}],"products":[{"vendor":"ecies","product":"go"},{"vendor":"golang","product":"go"},{"vendor":"netapp","product":"trident"}],"references":[{"url":"https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20210129-0006/","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-29510","tags":["web"]},{"url":"https://github.com/advisories/GHSA-p6mv-vmpw-j23r"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-29510","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-29510","tags":["report"]},{"url":"https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-29510","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-29510","description":"The encoding/xml package in Go versions 1.15 and earlier does not correctly preserve the semantics of directives 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.","status":"published","published":"2020-12-14T19:57:44.107Z","modified":"2024-09-16T16:48:42.611Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-115"],"updated_at":"2026-11-02T14:35:55.460269Z"}],"euvd":[{"id":"EUVD-2020-21877","description":"The encoding/xml package in Go versions 1.15 and earlier does not correctly preserve the semantics of directives 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.","status":"published","published":"2020-12-14T19:57:44Z","modified":"2024-09-16T16:48:42Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:55:48.234114Z"}],"ghsa":[{"id":"GHSA-p6mv-vmpw-j23r","title":"The encoding/xml package in Go versions 1.15 and earlier does not correctly preserve the...","description":"The encoding/xml package in Go versions 1.15 and earlier does not correctly preserve the semantics of directives 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.","status":"published","published":"2022-05-24T17:36:20Z","modified":"2023-01-29T05:05:00Z","updated_at":"2026-11-02T14:45:41.213171Z"}],"nvd":[{"id":"CVE-2020-29510","description":"The encoding/xml package in Go versions 1.15 and earlier does not correctly preserve the semantics of directives during tokenization round-trips, which allows an attacker to craft inputs that behave in conflicting ways during different stages of processing in affected downstream 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the semantics of directives 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.","status":"published","published":"2020-12-14T20:15:00Z","modified":"2025-10-24T04:48:56Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"},{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:54:24.541803Z"},{"id":"BIT-golang-2020-29510","description":"The encoding/xml package in Go versions 1.15 and earlier does not correctly preserve the semantics of directives 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.","status":"published","published":"2024-03-06T11:07:00.167Z","modified":"2026-09-10T16:00:47.625103018Z","updated_at":"2026-11-02T15:28:30.70064Z"}]}}