Reference page — cumulative record through Thursday, October 8, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L N N U H N N 7.5 .0537 92.4 —
AFFECTED Product Versions Fixed n/a n/a – —
TIMELINE Sep 6 Reserved by mitre Sep 6 Published (CNA: mitre) Oct 7 RESCORED — CVE-2019-16056. CVSS 5.3 → 7.5 (NVD).
An issue was discovered in Python through 2.7.16, 3.x through 3.5.7, 3.6.x through 3.6.9, and 3.7.x through 3.7.4. The email module wrongly parses email addresses that contain multiple @ characters. An application that uses the email module and implements some kind of checks on the From/To headers of a message could be tricked into accepting an email address that should be denied. An attack may be the same as in CVE-2019-11340; however, this CVE applies to Python more generally.
| Date | Event | Detail |
|---|---|---|
| September 6, 2019 | Reserved | Reserved by mitre |
| September 6, 2019 | Published | Published (CNA: mitre) |
| October 7, 2026 | RESCORED | RESCORED — CVE-2019-16056. CVSS 5.3 → 7.5 (NVD). |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| n/a | n/a | — | n/a | — |
Authoritative record: CVE-2019-16056 at cve.org
Weaknesses: CWE-20
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2019-16056 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Thursday, October 8, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
