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CVE-2024-42497

16
FAUCET Score

CVE-2024-42497 describes a permission enforcement vulnerability in Mattermost versions 9.9.1 and earlier, 9.5.7 and earlier, 9.10.0 and earlier, and 9.8.2 and earlier. A user with a systems manager role having read-only team access can exploit this flaw to perform unauthorized write operations on teams. Rated Medium severity (CVSS 4.9), this vulnerability has a low attack complexity and high impact on integrity, but no impact on confidentiality or availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 9.5.0, < 9.5.8CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
>= 9.8.0, < 9.8.3CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
>= 9.9.0, < 9.9.2CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
9.10.0CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:9.10.0:*:*:*:*:*:*:*
>= 9.5.0, <= 9.5.7CPE match
cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.0MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
1.2
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.34%
Probability of exploitation in next 30 days
EPSS Percentile
26.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0034 is in the 20th percentile among its peer group of 3,566 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (16)

gopatch availablevia ghsa
Product: github.com/mattermost/mattermost/server/v8Fixed in: 9.5.8
gopatch availablevia ghsa
Product: github.com/mattermost/mattermost/server/v8Fixed in: 9.10.1
gopatch availablevia ghsa
Product: github.com/mattermost/mattermost/server/v8Fixed in: 9.9.2
gopatch availablevia ghsa
Product: github.com/mattermost/mattermost/server/v8Fixed in: 9.8.3
redhatvendor investigatingvia redhat_api
Product: Red Hat Advanced Cluster Management for Kubernetes 2Fixed in: rhacm2/acm-grafana-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Advanced Cluster Security 4Fixed in: advanced-cluster-security/rhacs-central-db-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Advanced Cluster Security 4Fixed in: advanced-cluster-security/rhacs-main-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Advanced Cluster Security 4Fixed in: advanced-cluster-security/rhacs-rhel8-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat Advanced Cluster Security 4Fixed in: advanced-cluster-security/rhacs-roxctl-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Advanced Cluster Security 4Fixed in: advanced-cluster-security/rhacs-scanner-v4-db-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Advanced Cluster Security 4Fixed in: advanced-cluster-security/rhacs-scanner-v4-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ceph Storage 5Fixed in: rhceph/rhceph-5-dashboard-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ceph Storage 6Fixed in: rhceph/rhceph-6-dashboard-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Ceph Storage 7Fixed in: rhceph/grafana-rhel10
redhatvendor investigatingvia redhat_api
Product: Red Hat Ceph Storage 7Fixed in: rhceph/grafana-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift GitOpsFixed in: openshift-gitops-1/dex-rhel8

Vendor Advisories (2)

goGHSA-fxq9-6946-34q7high

Mattermost allows user with systems manager role with read-only access to teams to perform write operations on teams

Aug 22, 2024
redhatCVE-2024-42497Low

mattermost: permission enforcing failure allows a user with systems manager role with read-only access to teams to perform write operations on teams

Aug 22, 2024

References

mattermost.com / security-updates
Vendor Advisory