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CVE-2026-113652

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

CVSS score

5.6

EPSS probability

—

Risk score

0.6

Published

3 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

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Vulnerability description

DayBreach AI Explanation

Verified against sources

ApostropheCMS uploadfs Azure backend SAS token leak

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

ApostropheCMS’s uploadfs Azure backend embeds an account‑level SAS token in every public attachment URL when sas:true is set in versions 1.25.0‑1.27.x; the issue is fixed in 1.28.0.

Why does it matter?

Exposed SAS tokens can grant unauthorized access to the storage account, compromising data confidentiality.

What should be done?

  • upgrade uploadfs to version 1.28.0 or later
  • regenerate SAS tokens and restrict their scope
  • monitor for token leakage on affected systems
Chain of evidence and sources3 verified claims

uploadfs Azure backend, sas:true ayarıyla her genel ek URL’sine tam SAS sorgu dizesini ekler, bu da hesap‑seviyesi token sızıntısına yol açar.

S0 · daybreach-canonicalS1 · cvelist

Bu sorun 1.25.0 ile 1.27.x sürümlerinde mevcut; 1.28.0’da düzeltilmiştir.

S0 · daybreach-canonicalS1 · cvelist

Resmi yama durumu UNKNOWN olarak rapor edilmiştir; mevcut bir yama olup olmadığı kesin olarak doğrulanamamıştır.

S0 · daybreach-canonical
Show the technical text from the sources

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.

CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CWE: CWE-200, CWE-522

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-113652 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1apostrophecmsapostrophe View
2apostrophecmsuploadfs View
3npmuploadfs View
Total affected vendors: 2|Products: 3

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
5.6CVSS V3_1MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:LCVE CNA
5.6CVSS V31MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:LNVD
5.6CVSS 3.x—Vector not publishedGitHub Advisory
0.0CVSS 4.0—Vector not publishedGitHub Advisory

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-113652 is associated with the following CWEs:

CWE-200: Exposure of Sensitive Information to an Unauthorized ActorCWE-522: Common Weakness Enumeration Entry CWE-522

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-113652 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-hhph-8536-gfq5vendor-advisoryhttps://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845cevendor-advisoryhttps://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350vendor-advisoryhttps://github.com/apostrophecms/apostrophe/releases/tag/uploadfs@1.28.0vendor-advisoryhttps://github.com/advisories/GHSA-hhph-8536-gfq5vendor-advisory

CVSS Vector Radar Chart

5.6 / 10
Attack VectorNetworkComplexityHighPrivilegesNoneUser Interact.NoneConfidentialityHighIntegrityNoneAvailabilityLow

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)High
Integrity (Bütünlük)None
Availability (Erişilebilirlik)Low

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

A
apostrophecms logo
apostrophecms
N
npm logo
npm

Weakness Type (CWE & CAPEC)

CWE-200 CWE-522

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CVE-2026-113652 · ApostropheCMS uploadfs Azure backend leaks…