What is CVE-2023-1669?

CVE-2023-1669 is a high-severity vulnerability in Seopress, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2023-05-02.

How severe is CVE-2023-1669?

High severity. CVSS v3 base score is 7.2 out of 10.

Is CVE-2023-1669 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Seopress

CVE-2023-1669

The SEOPress WordPress plugin before 6.5.0.3 unserializes user input provided via the settings, which could allow high-privilege users such as admin to perform PHP Object Injection when a suitable gadget is present.

Vulnerability class: Insecure Deserialization

Published 2023-05-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.177 (97.1th percentile), scored 2026-09-30.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.177 · newest: 0.177 · change: 0.000

Affected products

Seopress
Seopress — versions 0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/fb8791f5-2879-431e-9afc-06d5839e4b9d (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2023-1669?: CVE-2023-1669 is a high-severity vulnerability in Seopress, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2023-05-02.
How severe is CVE-2023-1669?: High severity. CVSS v3 base score is 7.2 out of 10.
Is CVE-2023-1669 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.