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Fencer Intel
medium 4.3

CVE-2024-32939 json

Email addresses of remote users visible in props regardless of server settings

published 2y ago modified 4mo ago also GHSA-4ww8-fprq-cq34 , GO-2024-3093 , EUVD-2024-2498

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 12%
public exploits
0
none known

Summary

Mattermost versions 9.9.x <= 9.9.1, 9.5.x <= 9.5.7, 9.10.x <= 9.10.0, 9.8.x <= 9.8.2, when shared channels are enabled, fail to redact remote users' original email addresses stored in user props when email addresses are otherwise configured not to be visible in the local server."

Patch / fix

  • go github.com/mattermost/mattermost/server/v8 9.5.8, 9.8.3, 9.9.2, 9.10.1
  • go github.com/mattermost/mattermost-server 9.5.8+incompatible, 9.8.3+incompatible, 9.9.2+incompatible, 9.10.1+incompatible
  • Mattermost Mattermost 9.5.8, 9.8.3, 9.9.2, 9.10.1, 9.11.0

Is CVE-2024-32939 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2y ago

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
GitHub 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem package affected fixed in
go github.com/mattermost/mattermost/server/v8
>=9.9.0, <9.9.2
>=9.5.0, <9.5.8
>=9.10.0, <9.10.1
>=9.8.0, <9.8.3
all versions
9.9.2
9.5.8
9.10.1
9.8.3
go github.com/mattermost/mattermost-server
>=9.5.0+incompatible, <9.5.8+incompatible
>=9.8.0+incompatible, <9.8.3+incompatible
>=9.9.0+incompatible, <9.9.2+incompatible
>=9.10.0+incompatible, <9.10.1+incompatible
9.5.8+incompatible
9.8.3+incompatible
9.9.2+incompatible
9.10.1+incompatible
go github.com/mattermost/mattermost-server/v5
all versions
 no fix listed
go github.com/mattermost/mattermost-server/v6
all versions
 no fix listed

Affected products

  • Mattermost Mattermost

Classification

Weakness
  • CWE-284 Improper Access Control
  • CWE-312 Cleartext Storage of Sensitive Information

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.