What’s Vulnerable › Vulnerabilities

CVE-2026-113664: ApostropheCMS import-export tar guard misses './..' because it is a literal '../' substring test

• Severity: medium (CVSS 5.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-20 · updated 2026-10-23
• Weakness: CWE-22

Description

ApostropheCMS is an open-source Node.js content management system. Prior to 3.7.0 of the import-export module, an authenticated importer can submit a tar entry whose normalized destination targets a directory while bypassing the literal parent-path substring guard. Opening that directory as a write stream emits an unhandled filesystem error that can terminate the Node.js process; the source establishes this static primitive but not an end-to-end exploit or controlled arbitrary file read or write. This issue is fixed in version 3.7.0.

Affected products

• apostrophecms apostrophe: before 4.33.0
• @apostrophecms import-export: before 3.7.0

References

• https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce
• https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350
• https://github.com/apostrophecms/apostrophe/releases/tag/@apostrophecms/import-export@3.7.0
• https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-97wv-p4xx-c7mg
• https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-97wv-p4xx-c7mg

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