CVE-2024-2450

highpriority · track · 35OT risk · elevatedEPSS 0.006 · 48 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.60% (48th) EPSS

CVSS 8.8 · high

Is it mine?

16 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before 9.4.3 fail to correctly verify account ownership when switching from email to SAML authentication, allowing an authenticated attacker to take over other user accounts via a crafted switch request under specific conditions.

cvss

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

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · responsibledisclosure@mattermost.comexploitability 2.8 · impact 5.9

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-306USprimaryCWE-287US

affected products (16)

Products and version ranges known to be affected.

Mattermost Mattermost≤ 9.2.0 ≤9.2.5enisa_euvdEU
Mattermost Mattermost≤ 9.4.0 ≤9.4.2enisa_euvdEU
Mattermost Mattermost≤ 8.1.0 ≤8.1.9enisa_euvdEU
Mattermost Mattermost≤ 9.3.0 ≤9.3.1enisa_euvdEU
Mattermost Mattermost≤ 9.5.0enisa_euvdEU
Mattermost Mattermostall versionsenisa_euvdEU
mattermost mattermost server8.1.0 → 8.1.10nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server9.2.0 → 9.2.6nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server9.3.0 → 9.3.2nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server9.4.0 → 9.4.3nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server= 9.5.0nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Bitnami mattermost8.1.0 → 8.1.10osvUSpkg:bitnami/mattermost
Bitnami mattermost9.2.0 → 9.2.6osvUSpkg:bitnami/mattermost
Bitnami mattermost9.3.0 → 9.3.2osvUSpkg:bitnami/mattermost
Bitnami mattermost9.4.0 → 9.4.3osvUSpkg:bitnami/mattermost
Bitnami mattermost= 9.5.0osvUSpkg:bitnami/mattermost

advisories (1)

Vendor and ecosystem advisories describing this.

BIT-mattermost-2024-24502024-12-16vendor · osvUS
Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before 9.4.3 fail to correctly verify account ownership when switching from email to SAML authentication, allowing an authenticated attacker to take over other user accounts via a crafted switch request under specific conditions.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2024-03-15modified 2026-06-17

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references (5)

External citations — patches, advisories, analysis.

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