CVE-2023-6458

criticalpriority · track · 39EPSS 0.006 · 51 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.64% (51st) EPSS

CVSS 9.8 · critical

Is it mine?

16 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

Mattermost webapp fails to validate route parameters in/<TEAM_NAME>/channels/<CHANNEL_NAME> allowing an attacker to perform a client-side path traversal.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.1–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.17.1highCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:Lsecondary · ENISA EU

v3.17.1highCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:Lsecondary · responsibledisclosure@mattermost.comexploitability 1.3 · impact 5.3

v3.17.1highCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:Lsecondary · OSV

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-22USprimaryCWE-74USprimaryCWE-22USCWE-74US

affected products (16)

Products and version ranges known to be affected.

Mattermost Mattermost≤ 0 ≤7.8.13enisa_euvdEU
Mattermost Mattermost≤ 0 ≤9.1.1enisa_euvdEU
Mattermost Mattermost≤ 0 ≤9.0.2enisa_euvdEU
Mattermost Mattermost≤ 0 ≤8.1.4enisa_euvdEU
mattermost mattermost server< 7.8.14nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server8.0.0 → 8.1.5nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server9.0.0 → 9.0.3nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server9.1.0 → 9.1.2nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Bitnami mattermost< 7.8.14osvUSpkg:bitnami/mattermost
Bitnami mattermost8.0.0 → 8.1.5osvUSpkg:bitnami/mattermost
Bitnami mattermost9.0.0 → 9.0.3osvUSpkg:bitnami/mattermost
Bitnami mattermost9.1.0 → 9.1.2osvUSpkg:bitnami/mattermost
Go github.com/mattermost/mattermost-server/v6< 7.8.14osvUSpkg:golang/github.com/mattermost/mattermost-server/v6
Go github.com/mattermost/mattermost/server9.1.0 → 9.1.2osvUSpkg:golang/github.com/mattermost/mattermost/server
Go github.com/mattermost/mattermost/server/v8< 8.1.5osvUSpkg:golang/github.com/mattermost/mattermost/server/v8
Go github.com/mattermost/mattermost/server/v89.0.0 → 9.0.3osvUSpkg:golang/github.com/mattermost/mattermost/server/v8

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-7664-hcp7-f497Mattermost Injection vulnerability2023-12-06ghsa · osvUS
Mattermost webapp fails to validate route parameters in/<TEAM_NAME>/channels/<CHANNEL_NAME> allowing an attacker to perform a client-side path traversal.
BIT-mattermost-2023-64582024-03-06vendor · osvUS
Mattermost webapp fails to validate route parameters in/<TEAM_NAME>/channels/<CHANNEL_NAME> allowing an attacker to perform a client-side path traversal.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2023-12-06modified 2026-06-17

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+18494 more

references (5)

External citations — patches, advisories, analysis.

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