CVE-2026-4858
Essential information
- Published
- 21/05/2026 09:16
- Modified
- 21/05/2026 19:43
- Author
- —
- Creator
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- CVSS
- 8.0 HIGH (v3.1)
- CISA KEV
- No
- CWE
- —
- CVSS vector
-
—
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H—
CVSS metrics
- Access vector
- —
- Access complexity
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- Authentication
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- Confidentiality impact
- —
- Integrity impact
- —
- Availability impact
- —
- Exploitability
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- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- NETWORK
- Attack complexity
- HIGH
- Privileges required
- LOW
- User interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality impact
- HIGH
- Integrity impact
- HIGH
- Availability impact
- HIGH
- Exploit code maturity
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- —
- Attack complexity
- —
- Attack requirements
- —
- Privileges required
- —
- User interaction
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- Confidentiality (V)
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- Confidentiality (S)
- —
- Integrity (V)
- —
- Integrity (S)
- —
- Availability (V)
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- Availability (S)
- —
- Exploit maturity
- —
Description
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to check integration URL for path traversal which allows an malicious authenticated user to call an arbitrary API via system admin Mattermost auth token using via path traversal in integration action URL.. Mattermost Advisory ID: MMSA-2026-00640
NVD status
- Status
- Analyzed — CVE has been recently published to the CVE List and has been received by the NVD.
- Source
- [email protected]
- NVD
- View on NVD
Affected products (CPE)
| Product | CPE |
|---|---|
| mattermost / mattermost server | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* |
| mattermost / mattermost server | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* |
| mattermost / mattermost server | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* |
| mattermost / mattermost server | cpe:2.3:a:mattermost:mattermost_server:11.6.0:*:*:*:*:*:*:* |