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CVE-2022-1982

A crafted SVG attachment can crash a Mattermost server

MEDIUM
6.5
CVSS Score
Published: June 2, 2022 at 05:03 PM UTC
Updated: June 17, 2026 at 04:23 AM UTC
2 products affected across 1 vendorMattermost ServerMattermost

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

Uncontrolled resource consumption in Mattermost version 6.6.0 and earlier allows an authenticated attacker to crash the server via a crafted SVG attachment on a post.

Affected

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

Mattermost Server· Mattermost
95%
5.0.0 ≤ v < 6.3.86.4.0 ≤ v < 6.4.36.5.06.6.0
Affected range stops below 6.3.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.4.3, so it looks safe — our inference, not a vendor statement
Mattermost· Mattermost
60%
5.x ≤ v ≤ 5.396.4.x ≤ v ≤ 6.4.26.x ≤ v ≤ 6.3.75.x6.4.x6.5.x 6.5.06.6.x 6.6.06.x

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)

x_refsource_MISCVendor 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

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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