CVE-2026-41194Public exploitNetwork attack vector

OAuth mail disruption via state-changing GET

Published Apr 21, 2026 · Updated Apr 21, 2026

Cross-site request forgery in FreeScout before 1.8.215 allows remote attackers to disconnect mailbox OAuth credentials through an admin session. The mailbox OAuth disconnect route accepts a state-changing GET request and deletes stored OAuth metadata without validating a CSRF token. A logged-in mailbox administrator must load attacker-controlled content; exploitation interrupts inbound fetching or outbound OAuth mail delivery.

CVSS severity5.4
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in FreeScout before 1.8.215 allows remote attackers to disconnect mailbox OAuth credentials through an admin session. The mailbox OAuth disconnect route accepts a state-changing GET request and deletes stored OAuth metadata without validating a CSRF token. A logged-in mailbox administrator must load attacker-controlled content; exploitation interrupts inbound fetching or outbound OAuth mail delivery.

The record

CVE
CVE-2026-41194
Published
Apr 21, 2026
Updated
Apr 21, 2026
Vendor
FreeScout
Product
FreeScout
Classifications
CWE-352
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 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=< 1.8.215

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FreeScout · FreeScoutversion=< 1.8.215

Published CVSS scores

5.4GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)

Public exploit references

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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