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Fencer Intel
medium 4.3

CVE-2024-28949 json

DoS via a large number of User Preferences

published 2y ago modified 4mo ago also BIT-mattermost-2024-28949 , EUVD-2024-1247 , GHSA-mcw6-3256-64gg , GO-2024-2695

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

Mattermost Server versions 9.5.x before 9.5.2, 9.4.x before 9.4.4, 9.3.x before 9.3.3, 8.1.x before 8.1.11 don't limit the number of user preferences which allows an attacker to send a large number of user preferences potentially causing denial of service.

Patch / fix

  • go github.com/mattermost/mattermost/server/v8 8.1.11, 9.3.3, 9.4.4, 9.5.2
  • bitnami mattermost 8.1.11, 9.3.3, 9.4.4, 9.5.2
  • go github.com/mattermost/mattermost-server 9.3.3+incompatible, 9.4.4+incompatible, 9.5.2+incompatible
  • Mattermost Mattermost 8.1.11, 9.3.3, 9.4.4, 9.5.2, 9.6.0

Is CVE-2024-28949 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

0.56% chance of exploitation in the next 30 days, higher than 47% 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:N/I:N/A:L
GitHub 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
go github.com/mattermost/mattermost/server/v8
>=8.1.0, <8.1.11
>=9.3.0, <9.3.3
>=9.4.0, <9.4.4
>=9.5.0, <9.5.2
all versions
8.1.11
9.3.3
9.4.4
9.5.2
bitnami mattermost
>=8.1.0, <8.1.11
>=9.3.0, <9.3.3
>=9.4.0, <9.4.4
>=9.5.0, <9.5.2
8.1.11
9.3.3
9.4.4
9.5.2
go github.com/mattermost/mattermost-server
>=9.3.0+incompatible, <9.3.3+incompatible
>=9.4.0+incompatible, <9.4.4+incompatible
>=9.5.0+incompatible, <9.5.2+incompatible
9.3.3+incompatible
9.4.4+incompatible
9.5.2+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-400 Uncontrolled Resource Consumption
  • CWE-770 Allocation of Resources Without Limits or Throttling

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.