CVE-2026-32318Network attack vector

Hub token theft via unvalidated config endpoints

Published Mar 20, 2026 · Updated Mar 20, 2026

Origin validation failure in Skymatic Cryptomator for iOS before 2.8.3 allows attackers to steal Hub tokens via a tampered vault config. The Hub key-loading path accepts authentication and API endpoints from vault.cryptomator without checking that their authorities match or are trusted. Exploitation requires control of that configuration and a user unlocking a Hub-backed vault; encrypted vault data remains protected.

CVSS severity7.6
High
EPSS probability0.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Origin validation failure in Skymatic Cryptomator for iOS before 2.8.3 allows attackers to steal Hub tokens via a tampered vault config. The Hub key-loading path accepts authentication and API endpoints from vault.cryptomator without checking that their authorities match or are trusted. Exploitation requires control of that configuration and a user unlocking a Hub-backed vault; encrypted vault data remains protected.

The record

CVE
CVE-2026-32318
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
Cryptomator
Product
Cryptomator for iOS
Classifications
CWE-451, CWE-923, CWE-346, CWE-354, T1557, T1528
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.8.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Cryptomator · Cryptomator for iOSversion=< 2.8.3

Published CVSS scores

7.6GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
5.9NVDCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-451User Interface (UI) Misrepresentation of Critical Information
CWE-923Improper Restriction of Communication Channel to Intended Endpoints
CWE-346Origin Validation Error
CWE-354Improper Validation of Integrity Check Value
T1557Adversary-in-the-Middle
T1528Steal Application Access Token

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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