CVE-2026-113652

ApostropheCMS uploadfs Azure backend leaks account-level SAS token into every public attachment URL (sas: true)

MEDIUM 5.6EPSS 0.3%

ApostropheCMS is an open-source Node.js content management system. From 1.25.0 until 1.28.0, uploadfs Azure backend leaks account-level SAS token into every public attachment URL. When uploadfs is configured with the Azure backend and sas: true, createContainer() builds the BlobServiceClient from a URL that embeds the full SAS query string, and Azure SDK v12 derived clients inherit that query string. This issue is fixed in version 1.28.0.

Affected: apostrophecms · apostrophe · uploadfs
CVSS v3.1 GITHUB: 5.6 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS: 0.28% chance of exploitation in the next 30 days, 20th percentile
Published: 2026-10-20
Updated: 2026-10-21

Proof-of-concept exploits (1)

advisories/GHSA-hhph-8536-gfq5find archive

CVE references

apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ceREFERENCE
apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350REFERENCE
apostrophecms/apostrophe/releases/tag/uploadfs@1.28.0REFERENCE
apostrophecms/apostrophe/security/advisories/GHSA-hhph-8536-gfq5REFERENCE

References

CVE Record
NVD entry