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CVE-2024-54682

Zipbomb DoS via Missing Slack Import Validation

MEDIUM
4.9
CVSS Score
Published: December 16, 2024 at 08:03 AM UTC
Updated: June 17, 2026 at 08:10 AM UTC
2 products affected across 1 vendorMattermost ServerMattermost

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Severity
MEDIUM4.9
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

Mattermost versions 10.1.x <= 10.1.2, 10.0.x <= 10.0.2, 9.11.x <= 9.11.4, 9.5.x <= 9.5.12 fail to limit the file size for slack import file uploads which allows a user to cause a DoS via zip bomb by importing data in a team they are a team admin.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Mattermost Server· Mattermost
95%
10.0.0 ≤ v < 10.0.310.1.0 ≤ v < 10.1.39.11.0 ≤ v < 9.11.59.5.0 ≤ v < 9.5.13
Mattermost· Mattermost
60%
10.0.0 ≤ v ≤ 10.0.210.1.0 ≤ v ≤ 10.1.29.11.0 ≤ v ≤ 9.11.49.5.0 ≤ v ≤ 9.5.1210.0.010.1.09.11.09.5.0
Vendor states this is fixed in 10.0.3 (unaffected)
Vendor states this is fixed in 10.1.3 (unaffected)
Vendor states this is fixed in 10.2.0 (unaffected)
Vendor states this is fixed in 9.11.5 (unaffected)
Vendor states this is fixed in 9.5.13 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://mattermost.com/security-updates

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.9MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-409

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