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CVE-2026-45067 is an injection vulnerability in Symfony's Mime component, specifically in Symfony\Component\Mime\Address. The Address value object is used for mail address fields such as to, cc, bcc, from, and reply-to, and is expected to validate input addresses. Affected versions incorrectly accepted email addresses whose local-part was an RFC 5322 quoted string containing raw carriage-return and line-feed characters. Because the address was subsequently emitted verbatim into generated message headers and into SMTP envelope commands such as MAIL FROM and RCPT TO, embedded CRLF sequences could terminate the intended field and introduce attacker-controlled additional headers or SMTP commands. The issue was fixed by rejecting addresses containing line breaks in the Address constructor.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.