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Vulnerabilities

Vulnerability · CVE-2026-32731

ApostropheCMS is an open-source content management framework.

Published Mar 18, 2026 · catalog updated Jun 17, 2026 · ApostropheCMS is an open-source

Check if you run it

No confirmed exploitation is on record for CVE-2026-32731. EPSS is 0.61%. Act only if a listed version of ApostropheCMS is an open-source is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (ApostropheCMS is an open-source).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.61%
Remediation
Advisory link
Affected products
cpe apostrophecms/import-export

ApostropheCMS is an open-source content management framework. Prior to version 3.5.3 of , The function in constructs file-write paths using . does not resolve or sanitise traversal segments such as . It concatenates them as-is, meaning a tar entry named resolves to a path outside the intended extraction directory. No canonical-path check is performed before the write stream is opened. This is a textbook Zip Slip vulnerability. Any user who has been granted the Global Content Modify permission — a role routinely assigned to content editors and site managers — can upload a crafted file through the standard CMS import UI and write attacker-controlled content to any path the Node.js process can reach on the host filesystem. Version 3.5.3 of fixes the issue.

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.

  • cpe apostrophecms/import-exportversion unspecified

How to fix CVE-2026-32731

What to do

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

Should you patch?

No confirmed exploitation is on record for CVE-2026-32731. EPSS is 0.61%. Act only if a listed version of ApostropheCMS is an open-source is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 0.61%. There is no CISA KEV listing. 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. Mar 18, 2026 · NIST NVD

    Detected

    ApostropheCMS is an open-source content management framework. Prior to version 3.5.3 of , The function in constructs file-write paths using . does not resolve or sanitise traversal segments such as . It concatenates them as-is, meaning a tar entry named resolves to a path outside the intended extraction directory. No canonical-path check is performed before the write stream is opened. This is a te

  2. Jun 17, 2026 · NIST NVD

    Updated

    ApostropheCMS is an open-source content management framework. Prior to version 3.5.3 of , The function in constructs file-write paths using . does not resolve or sanitise traversal segments such as . It concatenates them as-is, meaning a tar entry named resolves to a path outside the intended extraction directory. No canonical-path check is performed before the write stream is opened. This is a te

Sources

  • CVE.orgVulnerability recordCVE-2026-32731

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-32731

    30-day exploitation probability 0.6%

    first.org
  • NIST NVDVulnerability recordCVE-2026-32731

    ApostropheCMS is an open-source content management framework. Prior to version 3.5.3 of , The function in constructs file-write paths using . does not resol

    nvd.nist.gov

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.