How severe is CVE-2024-39353?

CVE-2024-39353 has a CVSS 3.x base score of 2.7, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2024-39353 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-39353?

CVE-2024-39353 primarily affects Mattermost. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-39353?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-39353 have an EU (EUVD) identifier?

Yes. CVE-2024-39353 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-37916.

When was CVE-2024-39353 published?

CVE-2024-39353 was published on 2024-07-03 and last updated on 2026-06-17.

CVE-2024-39353

CVE-2024-39353 is a low-severity vulnerability in Mattermost with a CVSS 3.x base score of 2.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Low (CVSS 3.x base score 2.7)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-37916
Weakness: CWE-200
Affected product: Mattermost
Published: 2024-07-03
Last modified: 2026-06-17

Description

Mattermost versions 9.5.x <= 9.5.5 and 9.8.0 fail to sanitize the RemoteClusterFrame payloads before audit logging them which allows a high privileged attacker with access to the audit logs to read message contents.

Frequently asked questions

What is CVE-2024-39353?: Mattermost versions 9.5.x <= 9.5.5 and 9.8.0 fail to sanitize the RemoteClusterFrame payloads before audit logging them which allows a high privileged attacker with access to the audit logs to read message contents.
How severe is CVE-2024-39353?: CVE-2024-39353 has a CVSS 3.x base score of 2.7, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2024-39353 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-39353?: CVE-2024-39353 primarily affects Mattermost. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-39353?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-39353 have an EU (EUVD) identifier?: Yes. CVE-2024-39353 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-37916.
When was CVE-2024-39353 published?: CVE-2024-39353 was published on 2024-07-03 and last updated on 2026-06-17.

References

https://mattermost.com/security-updates

Affected products (2)

cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*
cpe:2.3:a:mattermost:mattermost:9.8.0:*:*:*:*:*:*:*

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