{"id":"AZL-80780","summary":"CVE-2026-28753 affecting package nginx for versions less than 1.28.3-1","details":"NGINX Plus and NGINX Open Source have a vulnerability in the ngx_mail_smtp_module module due to the improper handling of CRLF sequences in DNS responses. This allows an attacker-controlled DNS server to inject arbitrary headers into SMTP upstream requests, leading to potential request manipulation. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","modified":"2026-08-28T17:47:54.786944568Z","published":"2026-03-24T15:16:33Z","upstream":["CVE-2026-28753"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28753"}],"affected":[{"package":{"name":"nginx","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/nginx"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.28.3-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-80780.json"}}],"schema_version":"1.9.0"}