What is CVE-2023-1549?

CVE-2023-1549 is a high-severity vulnerability in Ad Inserter Project, classified under CWE-502 DESERIALIZATION OF UNTRUSTED DATA. CVSS score: 7.2/10. Published 2023-05-15.

How severe is CVE-2023-1549?

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

Is CVE-2023-1549 known to be exploited?

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

Vulnerability in Ad Inserter Project

CVE-2023-1549

The Ad Inserter WordPress plugin before 2.7.27 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

Published 2023-05-15 · 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: 0.169 (97.0th percentile), scored 2026-10-02.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.169 · newest: 0.169 · change: 0.000

Affected products

Ad Inserter Project
Ad Inserter — versions 0

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/c94b3a68-673b-44d7-9251-f3590cc5ee9e (Exploit, technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2023-1549?: CVE-2023-1549 is a high-severity vulnerability in Ad Inserter Project, classified under CWE-502 DESERIALIZATION OF UNTRUSTED DATA. CVSS score: 7.2/10. Published 2023-05-15.
How severe is CVE-2023-1549?: High severity. CVSS v3 base score is 7.2 out of 10.
Is CVE-2023-1549 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.