How severe is CVE-2024-39361?

CVE-2024-39361 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2024-39361 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-39361?

CVE-2024-39361 affects Mattermost. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-39361?

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

Does CVE-2024-39361 have an EU (EUVD) identifier?

Yes. CVE-2024-39361 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-37918.

When was CVE-2024-39361 published?

CVE-2024-39361 was published on 2024-07-03 and last updated on 2026-06-17.

CVE-2024-39361

CVE-2024-39361 is a low-severity vulnerability in Mattermost with a CVSS 3.x base score of 3.1. 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-284.

Key facts

Severity: Low (CVSS 3.x base score 3.1)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-37918
Weakness: CWE-284
Affected product: Mattermost
Published: 2024-07-03
Last modified: 2026-06-17

Description

Mattermost versions 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2 and 9.5.x <= 9.5.5 fail to prevent users from specifying a RemoteId for their posts which allows an attacker to specify both a remoteId and the post ID, resulting in creating a post with a user-defined post ID. This can cause some broken functionality in the channel or thread with user-defined posts

Frequently asked questions

What is CVE-2024-39361?: Mattermost versions 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2 and 9.5.x <= 9.5.5 fail to prevent users from specifying a RemoteId for their posts which allows an attacker to specify both a remoteId and the post ID, resulting in creating a post with a user-defined post ID. This can cause some broken functionality in the channel or thread with user-defined posts
How severe is CVE-2024-39361?: CVE-2024-39361 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2024-39361 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-39361?: CVE-2024-39361 affects Mattermost. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-39361?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-39361 have an EU (EUVD) identifier?: Yes. CVE-2024-39361 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-37918.
When was CVE-2024-39361 published?: CVE-2024-39361 was published on 2024-07-03 and last updated on 2026-06-17.

References

https://mattermost.com/security-updates

Affected products (1)

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

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