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Public proof of conceptFix available

CVE-2023-1549

A public proof of concept exists; no exploitation attested.

  • Published2023-05-15
  • Fixed in2.7.27

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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

Timeline

dates in UTC
  1. 2023-05-1513:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-1549?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-1549?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Ad inserter project ad inserter
BranchAffectedFixed in
2.7< 2.7.272.7.27

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As WPScan, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2023-05-15

Fix

  1. Update Ad inserter project ad inserter to 2.7.27

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published
2023-05-15
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-v9wx-wp77-q49m

Frequently asked questions

What is 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

Is CVE-2023-1549 actively exploited?

A proof-of-concept exploit exists for CVE-2023-1549, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2023-1549?

CVE-2023-1549 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record