Zero Radar
← feed
CriticalVulnerabilityCVE-2026-62011updated 29 Oct 2026, 20:19 UTC

Bonbon plugin allows remote attackers to inject malicious PHP objects

Attackers who need no login can send specially crafted data to the Bonbon WordPress plugin, which may let them run harmful code on the website. Anyone running an affected version should act quickly.

Official, 2 sources
SeverityCriticalCVSS 9.8 of 10
Being exploited?UnclearNo reports either way yet
Fix available?UnclearNo fixed version published in the sources yet
How sure is this?Official, 2 sourcesBacked by an official source

How the attack works simplified

  1. 1AttackerNo login or account needed
  2. 2Crafted requestMalicious serialized data sent to site
  3. 3Bonbon pluginUnsafely processes the untrusted data
  4. 4PHP object createdAttacker-controlled object is instantiated
  5. ResultAttacker may run code on the server

What happened

Unauthenticated PHP Object Injection (CWE-502 class) in Bonbon versions 1.11 and earlier, where untrusted input is unsafely deserialized.

Why it is dangerous: Successful exploitation can lead to remote code execution, data theft, or full takeover of the site server, with no account needed to attack.

Are you affected?

You are affected if you run Bonbon version 1.11 or earlier on your WordPress site.

Bonbon <= 1.11

What to do

  1. Check whether Bonbon is installed and what version is running
  2. Update Bonbon to a patched version as soon as one is released by the vendor
  3. If no update is available, deactivate and remove the Bonbon plugin
  4. Review the site for unexpected files or admin accounts if the plugin was exposed

Timeline

  1. 29 Oct 2026, 16:18 UTC
    Publicly disclosed
  2. 29 Oct 2026, 16:18 UTC
    Reported by NVD · NVD
  3. 29 Oct 2026, 16:20 UTC
    Picked up by Zero Radar
  4. 29 Oct 2026, 20:19 UTC
    GitHub Advisory reported on it · GitHub Advisory

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-62011 · GHSA-fm4r-fpc8-3m2w
CVSS
9.8 / 10
EPSS
0.4% chance of exploitation within 30 days
Disclosed
29 Oct 2026, 16:18 UTC
On Zero Radar
29 Oct 2026, 16:20 UTC (2 min after disclosure)
Last change
29 Oct 2026, 20:19 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works

Bonbon plugin allows remote attackers to inject malicious PHP objects · Zero Radar