Skip to content
Fencer Intel
medium 5.3

CVE-2019-20203 json

The Authorized Addresses feature in the Postie plugin 1.9.40 for WordPress allows remote attackers to publish posts by spoofing the From in…

published 6y ago modified 4mo ago also EUVD-2019-10757

cvss
5.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

The Authorized Addresses feature in the Postie plugin 1.9.40 for WordPress allows remote attackers to publish posts by spoofing the From information of an email message.

Is CVE-2019-20203 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

2.10% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/V1n1v131r4/Exploiting-Postie-WordPress-Plugin-/blob/master/README.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-290 Authentication Bypass by Spoofing
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.