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NVD / CVE Program· CNA Mattermost

CVE-2024-54682: Zipbomb DoS via Missing Slack Import Validation

MediumCVSS 4.9 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 19/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.44% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: github.com/mattermost/mattermost-server (Go) 10.0.3+incompatible, 10.1.3+incompatible, 9.11.5+incompatible; github.com/mattermost/mattermost/server/v8 (Go) 10.0.3, 10.1.3, 9.11.5; govulncheck-vulndb (openSUSE:Tumbleweed) 0.0.20241218T202206-1.1.

Low priority for now. Upgrade to github.com/mattermost/mattermost-server (Go) 10.0.3+incompatible, 10.1.3+incompatible, 9.11.5+incompatible; github.com/mattermost/mattermost/server/v8 (Go) 10.0.3, 10.1.3, 9.11.5; govulncheck-vulndb (openSUSE:Tumbleweed) 0.0.20241218T202206-1.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
Dec 16, 2024
Updated
Jun 17, 2026
EPSS
0.4% · 38th percentile

Report tools

JSON

Action score

19

Monitor

Low priority for now.

CVSS
19 / 40 · 4.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
4.9
CNA · Mattermost
6.5
1.6 point gap

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-54682

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
mattermostmattermost server

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Mattermost). Independent of NVD's CPE analysis and usually ahead of it.

  • Mattermost Mattermost

    • 10.2.0, 10.1.3, 10.0.3, 9.11.5, 9.5.13not affected
    • 10.1.0 and later · up to and including 10.1.2affected · semver
    • 10.0.0 and later · up to and including 10.0.2affected · semver
    • 9.11.0 and later · up to and including 9.11.4affected · semver
    • 9.5.0 and later · up to and including 9.5.12affected · semver
Affected versions · NVD (4)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • mattermost mattermost server9.5.0 and later · before 9.5.13
  • mattermost mattermost server9.11.0 and later · before 9.11.5
  • mattermost mattermost server10.0.0 and later · before 10.0.3
  • mattermost mattermost server10.1.0 and later · before 10.1.3

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Gogithub.com/mattermost/mattermost-serverfrom 10.0.0+incompatible · before 10.0.3+incompatible10.0.3+incompatible
Gogithub.com/mattermost/mattermost-serverfrom 10.1.0+incompatible · before 10.1.3+incompatible10.1.3+incompatible
Gogithub.com/mattermost/mattermost-serverfrom 9.11.0+incompatible · before 9.11.5+incompatible9.11.5+incompatible
Gogithub.com/mattermost/mattermost-serverfrom 9.5.0+incompatible · before 9.5.13+incompatible9.5.13+incompatible
Gogithub.com/mattermost/mattermost-server/v5from 0—
Gogithub.com/mattermost/mattermost-server/v6from 0—
Gogithub.com/mattermost/mattermost/server/v8from 0—
Gogithub.com/mattermost/mattermost/server/v8from 10.0.0 · before 10.0.310.0.3
Gogithub.com/mattermost/mattermost/server/v8from 10.1.0 · before 10.1.310.1.3
Gogithub.com/mattermost/mattermost/server/v8from 9.11.0 · before 9.11.59.11.5
Gogithub.com/mattermost/mattermost/server/v8from 9.5.0 · before 9.5.139.5.13
openSUSE:Tumbleweedgovulncheck-vulndbbefore 0.0.20241218T202206-1.10.0.20241218T202206-1.1

Same product

mattermost: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-4858Path traversal in integration action URL leading to arbitrary API execution via system admin’s auth token.
    39Monitor
  • CVE-2025-12421Account Takeover via Code Exchange Endpoint
    39Monitor
  • CVE-2025-12419Account takeover on OAuth/OpenID-enabled servers
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2024-48872Dec 16, 2024 · Bypass of "Max failed attempts" restriction via race condition
    19Monitor
  • ← EarlierCVE-2024-54083Dec 16, 2024 · DoS via lack of type validation in Calls
    26Monitor
  • Later →CVE-2025-20033Jan 9, 2025 · DoS via custom post type for sysconsole plugin readers
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Go:github.com/mattermost/mattermost-server10.0.3+incompatiblePackage registry (OSV)
Go:github.com/mattermost/mattermost-server10.1.3+incompatiblePackage registry (OSV)
Go:github.com/mattermost/mattermost-server9.11.5+incompatiblePackage registry (OSV)
Go:github.com/mattermost/mattermost-server9.5.13+incompatiblePackage registry (OSV)
Go:github.com/mattermost/mattermost/server/v810.0.3Package registry (OSV)
Go:github.com/mattermost/mattermost/server/v810.1.3Package registry (OSV)
Go:github.com/mattermost/mattermost/server/v89.11.5Package registry (OSV)
Go:github.com/mattermost/mattermost/server/v89.5.13Package registry (OSV)
opensuse:govulncheck-vulndb0.0.20241218T202206-1.1 · openSUSE:TumbleweedPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-3114465 days apartZip Bomb Denial of Service via Unrestricted Archive Decompression
    26Monitor

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Not on record for this CVE: EPSS history · patch commit or PR link.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-409 · Improper Handling of Highly Compressed Data (Data Amplification)

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records