{"url":"http://public2.vulnerablecode.io/api/packages/383599?format=json","purl":"pkg:golang/github.com/pires/go-proxyproto@0.5.0","type":"golang","namespace":"github.com/pires","name":"go-proxyproto","version":"0.5.0","qualifiers":{},"subpath":"","is_vulnerable":false,"next_non_vulnerable_version":"0.5.0","latest_non_vulnerable_version":"0.6.1","affected_by_vulnerabilities":[],"fixing_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/208306?format=json","vulnerability_id":"VCID-rn7f-ueax-7qe1","summary":"The package github.com/pires/go-proxyproto before 0.5.0 are vulnerable to Denial of Service (DoS) via the parseVersion1() function. The reader in this package is a default bufio.Reader wrapping a net.Conn. It will read from the connection until it finds a newline. Since no limits are implemented in the code, a deliberately malformed V1 header could be used to exhaust memory in a server process using this code - and create a DoS. This can be exploited by sending a stream starting with PROXY and continuing to send data (which does not contain a newline) until the target stops acknowledging. The risk here is small, because only trusted sources should be allowed to send proxy protocol headers.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-23351","reference_id":"","reference_type":"","scores":[{"value":"0.00573","scoring_system":"epss","scoring_elements":"0.69171","published_at":"2026-06-11T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-23351"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23351","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23351"},{"reference_url":"https://github.com/pires/go-proxyproto/commit/7f48261db810703d173f27f3309a808cc2b49b8b","reference_id":"","reference_type":"","scores":[{"value":"4.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/pires/go-proxyproto/commit/7f48261db810703d173f27f3309a808cc2b49b8b"},{"reference_url":"https://github.com/pires/go-proxyproto/issues/69","reference_id":"","reference_type":"","scores":[{"value":"4.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/pires/go-proxyproto/issues/69"},{"reference_url":"https://github.com/pires/go-proxyproto/pull/71","reference_id":"","reference_type":"","scores":[{"value":"4.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/pires/go-proxyproto/pull/71"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4BNVGJMVI3ZTZ675EFPUHPGXCKCGSX46","reference_id":"","reference_type":"","scores":[{"value":"4.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4BNVGJMVI3ZTZ675EFPUHPGXCKCGSX46"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C36IBVOZXRTWM7MGTRUTOM56P5RR74VU","reference_id":"","reference_type":"","scores":[{"value":"4.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C36IBVOZXRTWM7MGTRUTOM56P5RR74VU"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23351","reference_id":"","reference_type":"","scores":[{"value":"4.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23351"},{"reference_url":"https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMPIRESGOPROXYPROTO-1081577","reference_id":"","reference_type":"","scores":[{"value":"4.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMPIRESGOPROXYPROTO-1081577"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=985025","reference_id":"985025","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=985025"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/383599?format=json","purl":"pkg:golang/github.com/pires/go-proxyproto@0.5.0","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:golang/github.com/pires/go-proxyproto@0.5.0"}],"aliases":["CVE-2021-23351","GHSA-fqh4-rh59-xhvf"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-rn7f-ueax-7qe1"}],"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/packages/pkg:golang/github.com/pires/go-proxyproto@0.5.0"}