ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2021-33564

dragonfly_project dragonfly Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Published Nov 29, 2023 · catalog updated Nov 29, 2023 · dragonfly_project dragonfly Improper Neutralization

Patch now

CVE-2021-33564 is in the CISA known-exploited catalog. Confirm dragonfly_project dragonfly Improper Neutralization against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (dragonfly_project dragonfly Improper Neutralization).
  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
72.14%
Remediation
Remediation guidance
Affected products
vendor dragonfly_project dragonfly

An argument injection vulnerability in the Dragonfly gem before 1.4.0 for Ruby allows remote attackers to read and write to arbitrary files via a crafted URL when the verify_url option is disabled. This may lead to code execution. The problem occurs because the generate and process features mishandle use of the ImageMagick convert utility. Initial-access exploit intelligence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor dragonfly_project dragonflyversion unspecified

How to fix CVE-2021-33564

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2021-33564 is in the CISA known-exploited catalog. Confirm dragonfly_project dragonfly Improper Neutralization against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 72.14%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 29, 2023 · VulnCheck KEV

    Detected

    An argument injection vulnerability in the Dragonfly gem before 1.4.0 for Ruby allows remote attackers to read and write to arbitrary files via a crafted URL when the verify_url option is disabled. This may lead to code execution. The problem occurs because the generate and process features mishandle use of the ImageMagick convert utility. Initial-access exploit intelligence.

  2. Nov 29, 2023 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2021-33564

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-33564

    30-day exploitation probability 72.1%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2021-33564

    An argument injection vulnerability in the Dragonfly gem before 1.4.0 for Ruby allows remote attackers to read and write to arbitrary files via a crafted URL when the verify_url option is disabled. This may lead to code execution. The problem occurs because the generate and proce

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.