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CVE-2025-50340

An Insecure Direct Object Reference (IDOR) vulnerability was discovered in SOGo Webmail thru 5.6...

4.3 MediumPublic exploitDisputed

An Insecure Direct Object Reference (IDOR) vulnerability was discovered in SOGo Webmail thru 5.6.0, allowing an authenticated user to send emails on behalf of other users by manipulating a user-controlled identifier in the email-sending request. The server fails to verify whether the authenticated user is authorized to use the specified sender identity, resulting in unauthorized message delivery as another user. This can lead to impersonation, phishing, or unauthorized communication within the system. NOTE: this is disputed by the Supplier because the only effective way to prevent this sender spoofing is on the SMTP server, not within a client such as SOGo.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
Low
Availability
None

Exploit likelihood

0.39%Up 0.4 points since Aug 5, 2025
90%50%10%1%

What each source reports

CVE List Score used 4.3

An Insecure Direct Object Reference (IDOR) vulnerability was discovered in SOGo Webmail thru 5.6.0, allowing an authenticated user to send emails on behalf of other users by manipulating a user-controlled identifier in the email-sending request. The server fails to verify whether the authenticated user is authorized to use the specified sender identity, resulting in unauthorized message delivery as another user. This can lead to impersonation, phishing, or unauthorized communication within the system. NOTE: this is disputed by the Supplier because the only effective way to prevent this sender spoofing is on the SMTP server, not within a client such as SOGo.

Record
CVE-2025-50340
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-639
Updated
2026-11-02
EUVDEUVD-2025-23544 4.3

An Insecure Direct Object Reference (IDOR) vulnerability was discovered in SOGo Webmail thru 5.6.0, allowing an authenticated user to send emails on behalf of other users by manipulating a user-controlled identifier in the email-sending request. The server fails to verify whether the authenticated user is authorized to use the specified sender identity, resulting in unauthorized message delivery as another user. This can lead to impersonation, phishing, or unauthorized communication within the system. NOTE: this is disputed by the Supplier because the only effective way to prevent this sender spoofing is on the SMTP server, not within a client such as SOGo.

Record
EUVD-2025-23544
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-2397-fjxq-4xvj 4.3

An Insecure Direct Object Reference (IDOR) vulnerability was discovered in SOGo Webmail thru 5.6...

An Insecure Direct Object Reference (IDOR) vulnerability was discovered in SOGo Webmail thru 5.6.0, allowing an authenticated user to send emails on behalf of other users by manipulating a user-controlled identifier in the email-sending request. The server fails to verify whether the authenticated user is authorized to use the specified sender identity, resulting in unauthorized message delivery as another user. This can lead to impersonation, phishing, or unauthorized communication within the system.

Record
GHSA-2397-fjxq-4xvj
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-639
Updated
2026-11-02
NVD 4.3

An Insecure Direct Object Reference (IDOR) vulnerability was discovered in SOGo Webmail thru 5.6.0, allowing an authenticated user to send emails on behalf of other users by manipulating a user-controlled identifier in the email-sending request. The server fails to verify whether the authenticated user is authorized to use the specified sender identity, resulting in unauthorized message delivery as another user. This can lead to impersonation, phishing, or unauthorized communication within the system. NOTE: this is disputed by the Supplier because the only effective way to prevent this sender spoofing is on the SMTP server, not within a client such as SOGo.

Record
CVE-2025-50340
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-639
Updated
2026-11-02
OSVUBUNTU-CVE-2025-50340 4.3

An Insecure Direct Object Reference (IDOR) vulnerability was discovered in SOGo Webmail thru 5.6.0, allowing an authenticated user to send emails on behalf of other users by manipulating a user-controlled identifier in the email-sending request. The server fails to verify whether the authenticated user is authorized to use the specified sender identity, resulting in unauthorized message delivery as another user. This can lead to impersonation, phishing, or unauthorized communication within the system. NOTE: this is disputed by the Supplier because the only effective way to prevent this sender spoofing is on the SMTP server, not within a client such as SOGo.

Record
UBUNTU-CVE-2025-50340
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Updated
2026-11-03
OSV No score

An Insecure Direct Object Reference (IDOR) vulnerability was discovered in SOGo Webmail thru 5.6.0, allowing an authenticated user to send emails on behalf of other users by manipulating a user-controlled identifier in the email-sending request. The server fails to verify whether the authenticated user is authorized to use the specified sender identity, resulting in unauthorized message delivery as another user. This can lead to impersonation, phishing, or unauthorized communication within the system.

Record
CVE-2025-50340
Updated
2026-11-02

Affected packages

Affected packages
PackageAffectedFixed
sogo
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
2.2.17a-12.2.17a-1.12.2.17a-1.1build12.2.17a-1.1ubuntu0.1~esm1
None known
sogo
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
3.2.10-13.2.10-1build13.2.10-1ubuntu0.1~esm1
None known
sogo
Ubuntu:Pro:20.04:LTS
All versions, plus listed versions
4.0.8-14.1.0-14.1.1-14.3.0-14.3.0-1ubuntu0.1~esm1
None known
sogo
Ubuntu:Pro:22.04:LTS
All versions, plus listed versions
5.1.0-15.2.0-15.2.0-35.3.0-15.3.0-1build2
Show 4 moreShow less
5.4.0-15.5.0-15.5.1-15.5.1-1ubuntu0.1~esm1
None known
sogo
Ubuntu:25.10
All versions, plus listed versions
5.11.2-45.12.1-15.12.1-1build25.12.1-25.12.1-3
None known
sogo
Ubuntu:26.10
All versions, plus listed versions
5.12.4-1.25.12.8-25.12.9-15.12.10-1ubuntu1
None known
sogo
Ubuntu:Pro:26.04:LTS
All versions, plus listed versions
5.12.1-35.12.4-15.12.4-1.15.12.4-1.25.12.4-1.2ubuntu0.1~esm15.12.4-1.2ubuntu0.1~esm2
None known

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubmillad7/SOGo_web_mail-vulnerability-CVE-2025-503402025-07-31

History

History
RecordedChangedSources
affected, factsOSV
affected
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-50340 is a medium vulnerability (CVSS 4.3) in sogo, published August 4, 2025. Its validity is disputed. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.39%, the 33rd percentile.

References

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