System Role with edit access to permissions can elevate themselves to system admin
Noroxi assessment
Priority: Monitor (action score 28/100)
- 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: 0.34% (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) 9.10.1+incompatible, 9.5.8+incompatible, 9.8.3+incompatible; github.com/mattermost/mattermost/server/v8 (Go) 9.10.1, 9.5.8, 9.8.3.
- Severity is disputed: the assigning authority (CNA) scores it 4.7, NVD 7.2.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to github.com/mattermost/mattermost-server (Go) 9.10.1+incompatible, 9.5.8+incompatible, 9.8.3+incompatible; github.com/mattermost/mattermost/server/v8 (Go) 9.10.1, 9.5.8, 9.8.3 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
Mattermost versions 9.9.x <= 9.9.1, 9.5.x <= 9.5.7, 9.10.x <= 9.10.0 and 9.8.x <= 9.8.2 fail to restrict which roles can promote a user as system admin which allows a System Role with edit access to the permissions section of system console to update their role (e.g. member) to include the `manage_system` permission, effectively becoming a System Admin.
- Published
- Aug 22, 2024
- Updated
- Jun 17, 2026
- EPSS
- 0.3% · 26th percentile
- CWE
- CWE-284
Report tools
Action score
28
Monitor
Low priority for now.
- CVSS
- 28 / 40 · 7.2 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 7.2
- CNA · Mattermost
- 4.7
- 2.5 point gap
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
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.
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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.
We use this product, ask for helpAffected 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.
| Vendor | Product | CPE |
|---|---|---|
| mattermost | mattermost | cpe:2.3:a:mattermost:mattermost |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- mattermost mattermost9.5.0 and later · before 9.5.8
- mattermost mattermost9.8.0 and later · before 9.8.3
- mattermost mattermost9.9.0 and later · before 9.9.2
- mattermost mattermost9.10.0 and later · before 9.10.1
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
- 9.11.0, 9.9.2, 9.5.8, 9.10.1, 9.8.3not affected
- 9.10.0affected
- 9.9.0 and later · up to and including 9.9.1affected · semver
- 9.5.0 and later · up to and including 9.5.7affected · semver
- 9.8.0 and later · up to and including 9.8.2affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | from 9.10.0+incompatible · before 9.10.1+incompatible | 9.10.1+incompatible |
| Go | github.com/mattermost/mattermost-server | from 9.5.0+incompatible · before 9.5.8+incompatible | 9.5.8+incompatible |
| Go | github.com/mattermost/mattermost-server | from 9.8.0+incompatible · before 9.8.3+incompatible | 9.8.3+incompatible |
| Go | github.com/mattermost/mattermost-server | from 9.9.0+incompatible · before 9.9.2+incompatible | 9.9.2+incompatible |
| Go | github.com/mattermost/mattermost-server/v5 | all versions | — |
| Go | github.com/mattermost/mattermost-server/v6 | all versions | — |
| Go | github.com/mattermost/mattermost/server/v8 | from 9.10.0 · before 9.10.1 | 9.10.1 |
| Go | github.com/mattermost/mattermost/server/v8 | from 9.5.0 · before 9.5.8 | 9.5.8 |
| Go | github.com/mattermost/mattermost/server/v8 | from 9.8.0 · before 9.8.3 | 9.8.3 |
| Go | github.com/mattermost/mattermost/server/v8 | from 9.9.0 · before 9.9.2 | 9.9.2 |
| Go | github.com/mattermost/mattermost/server/v8 | all versions | — |
Same product
mattermost: all recordsOther highest-scoring records for the same primary product.
- CVE-2024-39777Malicious remote can invite itself to an arbitrary local channel38Monitor
- CVE-2023-2193Oauth authorization codes do not expire when deauthorizing an oauth2 app36Monitor
- CVE-2019-20851An issue was discovered in Mattermost Mobile Apps before 1.26.0.36Monitor
- CVE-2024-40886One-click Client-Side Path Traversal Leading to CSRF in User Management admin page35Monitor
- CVE-2023-7114Mattermost version 2.10.0 and earlier fails to sanitize deeplink paths, which allows an attacker to perform CSRF attacks against the server.35Monitor
- CVE-2024-39832Permanently local data deletion by malicious remote34Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Go:github.com/mattermost/mattermost-server | 9.10.1+incompatible | Package registry (OSV) |
| Go:github.com/mattermost/mattermost-server | 9.5.8+incompatible | Package registry (OSV) |
| Go:github.com/mattermost/mattermost-server | 9.8.3+incompatible | Package registry (OSV) |
| Go:github.com/mattermost/mattermost-server | 9.9.2+incompatible | Package registry (OSV) |
| Go:github.com/mattermost/mattermost/server/v8 | 9.10.1 | Package registry (OSV) |
| Go:github.com/mattermost/mattermost/server/v8 | 9.5.8 | Package registry (OSV) |
| Go:github.com/mattermost/mattermost/server/v8 | 9.8.3 | Package registry (OSV) |
| Go:github.com/mattermost/mattermost/server/v8 | 9.9.2 | Package 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.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- BhaRat (hackit_bharat)finder
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2024-3977721 days apartMalicious remote can invite itself to an arbitrary local channel38Monitor
- CVE-2024-3927421 days apartMalicious remote can add users to arbitrary teams and channels26Monitor
- CVE-2024-642850 days apartLimited DoS due to permitting creating users with user-defined IDs26Monitor
- CVE-2024-3649221 days apartExisting local user overwritten by malicious remote25Monitor
- CVE-2024-3625750 days apartLack of permission check when updating the profile picture of a remote user (shared channels enabled)21Monitor
- CVE-2024-3936150 days apartCreating posts with user-defined IDs permitted in CreatePost API21Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-24-1327 · Aug 23, 2024(Mattermost Mobil Uygulama Güvenlik Bildirimi)
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
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-284 · Improper Access ControlCVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/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.
Attack patterns (CAPEC)
- Embedding Scripts within ScriptsCAPEC-19likelihood: High · High
- Malicious Logic InsertionCAPEC-441likelihood: Medium · High
- Modification of Windows Service ConfigurationCAPEC-478likelihood: Low · High
- Malicious Root CertificateCAPEC-479likelihood: Low · Low
- Intent SpoofCAPEC-502
- WebView ExposureCAPEC-503
- Data Injected During ConfigurationCAPEC-536likelihood: Low · High
- Incomplete Data Deletion in a Multi-Tenant EnvironmentCAPEC-546likelihood: Low · Medium
ATT&CK techniques
- RootkitT1014
- Obfuscated Files or Information: Embedded PayloadsT1027.009
- Boot or Logon Initialization ScriptsT1037
- Taint shared contentT1080
- Server Software Component: Terminal Services DLLT1505.005
- Pre-OS Boot:BootkitT1542.003
- Create or Modify System ProcessT1543
- Create or Modify System Process: Launch AgentT1543.001
- Create or Modify System Process:Windows ServiceT1543.003
- Create or Modify System Process: Launch DaemonT1543.004
- Event Triggered Execution:Change Default File AssociationT1546.001
- Event Triggered Execution:.bash_profile and .bashrcT1546.004
- Event Triggered Execution: Accessibility FeaturesT1546.008
- Event Triggered Execution: Installer PackagesT1546.016
- Boot or Logon Autostart ExecutionT1547
- Boot or Logon Autostart Execution:Kernel Modules and ExtensionsT1547.006
Change log
- Fix✗ → ✓
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References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.