Account-Level SAS Token Exposure in ApostropheCMS by Apostrophe
CVE-2026-113652

5.6MEDIUM

Key Information:

Vendor

Apostrophecms

Status
Apostrophe
Uploadfs
Vendor
CVE Published:
20 October 2026

What is CVE-2026-113652?

ApostropheCMS, a popular open-source content management system built on Node.js, is affected by a vulnerability that can leak account-level SAS tokens in public attachment URLs. Specifically, between versions 1.25.0 and 1.28.0, when the uploadfs module is configured with Azure and SAS tokens are enabled, the createContainer() function exposes the complete SAS query string in URLs. This can lead to unauthorized access to sensitive data stored in Azure Blob Storage. Users are advised to update to version 1.28.0 to address this security risk.

Affected Version(s)

apostrophe < 4.33.0

uploadfs >= 1.25.0, < 1.28.0

References

https://github.com/apostrophecms/apostrophe/security/advi...
x_refsource_CONFIRM
https://github.com/apostrophecms/apostrophe/commit/9500b8...
x_refsource_MISC
https://github.com/apostrophecms/apostrophe/commit/f84fd4...
x_refsource_MISC

CVSS V3.1

Score:
5.6
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.