TI-2026-45293 Aliases CVE-2026-63667 GHSA-79qf-vqgc-7xx3

ApostropheCMS: Arbitrary file read via import-export attachment-name path traversal

MEDIUM 62CWE-22Published 2026-08-17 · Updated 2026-11-02

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-22 and the CVSS impact.

Summary

ApostropheCMS is an open-source Node.js content management system. Prior to 3.6.2, the import-export module in packages/import-export/lib/formats/gzip.js constructs an attachment source path from the attacker-controlled _id, name, and extension fields in aposAttachments.json without ensuring that the resolved path remains under the extracted attachments directory, allowing an authenticated contributor to import a crafted archive, read a host file with an allowed extension, and publish the copied file at an unauthenticated uploads URL. This issue is fixed in version 3.6.2.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00465 40th percentileScored 2026-11-07

Fix Fixed apostrophe (apostrophecms): 3.6.2@apostrophecms/import-export (npm): 3.6.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

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 3.6.2	3.6.2	Patch available	CNA
—	@apostrophecms/import-export (npm)	before 3.6.2	3.6.2	Patch available	GHSA-79qf-vqgc-7xx3

apostrophe Vendorapostrophecms Affected before 3.6.2 Fixed in 3.6.2 Patch available CNA
@apostrophecms/import-export (npm) Vendor— Affected before 3.6.2 Fixed in 3.6.2 Patch available GHSA-79qf-vqgc-7xx3

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

Fix · CNA apostrophe (apostrophecms) Fixed in 3.6.2
Fix · GHSA-79qf-vqgc-7xx3 @apostrophecms/import-export (npm) Fixed in 3.6.2 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-63667
2026-10-03 Alias added: GHSA-79qf-vqgc-7xx3
2026-11-02 1 new reference · CNA
2026-11-02 1 new reference · GHSA-79qf-vqgc-7xx3

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-63667

Other 4

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

See all 65 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences