CVE Explorer
CVE-2026-30227
MimeKit is a C# library which may be used for the creation and parsing of messages using the Multipurpose Internet Mail Extension (MIME), as defined by numerous IETF specifications. Prior to version 4.15.1, a CRLF injection vulnerability in MimeKit allows an attacker to embed \r\n into the SMTP envelope address local-part (when the local-part is a quoted-string). This is non-compliant with RFC 5321 and can result in SMTP command injection (e.g., injecting additional RCPT TO / DATA / RSET command
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"MimeKit","vendor":"jstedfast","versions":[{"status":"affected","version":"< 4.15.1"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:3b8654ba3943c5841674820306593e0db8a0deecbcad6bda1c6b4daf6858d57b · sha256:9ffc544d736e16c0… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:3b8654ba3943c5841674820306593e0db8a0deecbcad6bda1c6b4daf6858d57b · sha256:9ffc544d736e16c0… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-93","description":"CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:3b8654ba3943c5841674820306593e0db8a0deecbcad6bda1c6b4daf6858d57b · sha256:9ffc544d736e16c0… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/jstedfast/MimeKit/security/advisories/GHSA-g7hc-96xr-gvvx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/jstedfast/MimeKit/security/advisories/GHSA-g7hc-96xr-gvvx"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:3b8654ba3943c5841674820306593e0db8a0deecbcad6bda1c6b4daf6858d57b · sha256:9ffc544d736e16c0… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.