Skip to content
Fencer Vulns
medium 6.8

CVE-2024-39832 json

Permanently local data deletion by malicious remote

published 2024-08-01 2 y ago modified 2026-06-17 4 mo ago also GHSA-762m-4cx6-6mf4 , GO-2024-3020 , EUVD-2024-2523

cvss
6.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to properly safeguard an error handling which allows a malicious remote to permanently delete local data by abusing dangerous error handling, when share channels were enabled.

Patch / fix

  • go github.com/mattermost/mattermost/server/v8 9.5.7, 9.7.6, 9.8.2, 9.9.1
  • go github.com/mattermost/mattermost-server 9.5.7+incompatible, 9.7.6+incompatible, 9.8.2+incompatible, 9.9.1+incompatible
  • Mattermost Mattermost 9.5.7, 9.7.6, 9.8.2, 9.9.1, 9.10.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
NVD 3.1 8.7 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
GitHub 3.1 6.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
go github.com/mattermost/mattermost/server/v8
>=9.5.0, <9.5.7
>=9.7.0, <9.7.6
>=9.8.0, <9.8.2
>=9.9.0, <9.9.1
all versions
9.5.7
9.7.6
9.8.2
9.9.1
go github.com/mattermost/mattermost-server
>=9.5.0+incompatible, <9.5.7+incompatible
>=9.7.0+incompatible, <9.7.6+incompatible
>=9.8.0+incompatible, <9.8.2+incompatible
>=9.9.0+incompatible, <9.9.1+incompatible
9.5.7+incompatible
9.7.6+incompatible
9.8.2+incompatible
9.9.1+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-754 Improper Check for Unusual or Exceptional Conditions

References

Sources

Fencer Vulns 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.