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GHSA-9952-gv64-x94c

CriticalCVSS 9.8 / 10
Published Jul 28, 2025·Last modified Jul 28, 2025
Affected Components(0)

No affected components available

Description

Impact

This vulnerability affects applications that:

  • Use the ImageMagick handler for image processing (imagick as the image library)
  • AND either:
    • Allow file uploads with user-controlled filenames and process uploaded images using the resize() method
    • OR use the text() method with user-controlled text content or options

An attacker can:

  • Upload a file with a malicious filename containing shell metacharacters that get executed when the image is processed
  • OR provide malicious text content or options that get executed when adding text to images

Patches

Upgrade to v4.6.2 or later.

Workarounds

  • Switch to the GD image handler (gd, the default handler), which is not affected by either vulnerability
  • For file upload scenarios: Instead of using user-provided filenames, generate random names to eliminate the attack vector with getRandomName() when using the move() method, or use the store() method, which automatically generates safe filenames
  • For text operations: If you must use ImageMagick with user-controlled text, sanitize the input to only allow safe characters: preg_replace('/[^a-zA-Z0-9\s.,!?-]/', '', $text) and validate/restrict text options

References

Risk Scores
Base Score
9.8

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.

Threat Intelligence
9.0

Active exploitation in the wild has been confirmed. Immediate patching or mitigation is required.

EPSS
1.49%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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Critical severity
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