ApostropheCMS import-export tar check bypass can crash Node.js
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.
Summary
ApostropheCMS import-export module (@apostrophecms/import-export) before 3.7.0 is affected. Its check only tests for a literal "../" substring, so a tar entry whose normalized destination targets a directory bypasses it (CWE-22). An authenticated importer can submit such an entry, and opening that directory as a write stream raises an unhandled filesystem error that can terminate the Node.js process. The sources do not show arbitrary file read or write.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| apostrophecms | apostrophe | before 4.33.0 | 4.33.0 | Patch available | CNA |
| apostrophecms | import-export | before 3.7.0 | 3.7.0 | Patch available | CNA |
| — | @apostrophecms/import-export (npm) | before 3.7.0 | 3.7.0 | Patch available | GHSA-97wv-p4xx-c7mg |
- apostrophe Vendorapostrophecms Affected before 4.33.0 Fixed in 4.33.0 Patch available CNA
- import-export Vendorapostrophecms Affected before 3.7.0 Fixed in 3.7.0 Patch available CNA
- @apostrophecms/import-export (npm) Vendor— Affected before 3.7.0 Fixed in 3.7.0 Patch available GHSA-97wv-p4xx-c7mg
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apostrophecms:apostrophecms:*:*:*:*:*:*:*:* | — | — | apostrophecms |
- cpe:2.3:a:apostrophecms:apostrophecms:*:*:*:*:*:*:*:* Versions — — ·apostrophecms
Remediation
Update @apostrophecms/import-export to 3.7.0, which fixes the flaw. The sources list no fixed version for apostrophe.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA apostrophe (apostrophecms) Fixed in 4.33.0
- Fix · CNA import-export (@apostrophecms) Fixed in 3.7.0
- Fix · GHSA-97wv-p4xx-c7mg @apostrophecms/import-export (npm) Fixed in 3.7.0 Advisory →
Timeline
- 2026-10-20 Threatist record created from CVE-2026-113664
- 2026-10-21 Alias added: GHSA-97wv-p4xx-c7mg
- 2026-10-21 Fix available: npm/@apostrophecms/[email protected] · GHSA-97wv-p4xx-c7mg
- 2026-10-21 CVSS score added · GHSA-97wv-p4xx-c7mg
- 2026-10-21 Weakness changed · GHSA-97wv-p4xx-c7mg
- 2026-10-21 5 new references · GHSA-97wv-p4xx-c7mg
- 2026-10-23 CISA SSVC decision points changed
- 2026-10-23 Priority changed: LOW → MEDIUM
References
Other 5
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-97wv-p4xx-c7mg
- https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce
- https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350
- https://github.com/apostrophecms/apostrophe/releases/tag/@apostrophecms/[email protected]
- https://github.com/apostrophecms/apostrophe
More apostrophecms vulnerabilities
- TI-2026-25223 ApostropheCMS has Arbitrary File Write (Zip Slip / Path Traversal) in Import-Export Gzip Extraction CVSS 3.1CRITICAL 10.0
- TI-2026-32848 Apostrophe has default XSS via `xmp` raw-text passthrough in `sanitize-html` CVSS 3.1CRITICAL 9.3
- TI-2026-38664 @apostrophecms/seo Vulnerable to Stored XSS via Unsanitized Google Analytics / GTM ID Injected into Script Tag CVSS 3.1HIGH 8.7
- TI-2026-27673 ApostropheCMS: Stored XSS in SEO Fields Leads to Authenticated API Data Exposure in ApostropheCMS CVSS 3.1HIGH 8.7
- TI-2026-76992 Unauthenticated resource exhaustion via ApostropheCMS import routes CVSS 3.1HIGH 7.5
- TI-2026-76974 ApostropheCMS leaves rejected CSV uploads in temporary directory CVSS 3.1HIGH 7.5
Sources
- CVE-2026-113664 · CVE Program
- CVE-2026-113664 · NVD
- FIRST EPSS
- GHSA-97wv-p4xx-c7mg · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences