CVE-2023-5958
POST SMTP Mailer < 2.7.1 - Unauthenticated Cross-site Scripting
- Published
- Updated
- Reserved
- Assigned by
- WPScan
Description
The POST SMTP Mailer WordPress plugin before 2.7.1 does not escape email message content before displaying it in the backend, allowing an unauthenticated attacker to perform XSS attacks against highly privileged users.
Public exploit
A reference of the record is tagged as an exploit or proof of concept: anyone can try it against an unpatched system.
- https://wpscan.com/vulnerability/22fa478d-e42e-488d-9b4b-a8720dec7cee (opens in a new tab)exploitvdb-entrytechnical-descriptionx_transferred
Timeline
ID reserved
By WPScan
- 24 days later
· 24 days later
Published
- 8 months later
· 8 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.51% · top 56% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.1.
Weakness
- CWE-79 Cross-Site Scripting (XSS)
- CWE-79 (opens in a new tab)All about CWE-79 and its CVEs
Affected products
- affected < 2.7.1
References (1)
- https://wpscan.com/vulnerability/22fa478d-e42e-488d-9b4b-a8720dec7cee (opens in a new tab)exploitvdb-entrytechnical-descriptionx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-5958)Record last updated .