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CriticalVulnerabilityCVE-2026-62012updated 29 Oct 2026, 20:19 UTC

Coinpress: unauthenticated flaw lets attackers inject PHP objects

Someone on the internet can send specially crafted data to the Coinpress website and make it run code they choose, without needing a login. Anyone running an affected version should update or take it offline until fixed.

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. 1Attacker sends crafted dataNo login needed to reach the site
  2. 2Coinpress reads the dataInput is unsafely deserialized
  3. 3Malicious PHP object runsAttacker-chosen code executes on server
  4. 4Data or server exposedAttacker gains access to the system
  5. ResultAttacker may control the server

What happened

Unauthenticated PHP Object Injection (unsafe deserialization of untrusted input) in Coinpress version 1.0.15 and earlier.

Why it is dangerous: An attacker without an account could potentially take control of the server or access its data, and the severity is rated critical (CVSS 9.8). Sites running Coinpress are at risk.

Are you affected?

You are affected if you run Coinpress version 1.0.15 or earlier.

Coinpress <= 1.0.15

What to do

  1. Check whether your Coinpress version is 1.0.15 or earlier
  2. Check the GitHub advisory GHSA-v3c5-w69v-fmfc for an updated release and apply it
  3. If no fix is available, restrict public access to the site or take it offline until patched

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-2026-62012 · GHSA-v3c5-w69v-fmfc
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

Coinpress: unauthenticated flaw lets attackers inject PHP objects · Zero Radar