How severe is CVE-2024-43813?

CVE-2024-43813 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2024-43813 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-43813?

CVE-2024-43813 affects Mattermost. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-43813?

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

Does CVE-2024-43813 have an EU (EUVD) identifier?

Yes. CVE-2024-43813 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-40463.

When was CVE-2024-43813 published?

CVE-2024-43813 was published on 2024-08-22 and last updated on 2026-06-17.

CVE-2024-43813

CVE-2024-43813 is a medium-severity vulnerability in Mattermost with a CVSS 3.x base score of 4.3. 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: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-40463
Weakness: CWE-284
Affected product: Mattermost
Published: 2024-08-22
Last modified: 2026-06-17

Description

Mattermost versions 9.5.x <= 9.5.7, 9.10.x <= 9.10.0 fail to enforce proper access controls which allows any authenticated user, including guests, to mark any channel inside any team as read for any user.

Frequently asked questions

What is CVE-2024-43813?: Mattermost versions 9.5.x <= 9.5.7, 9.10.x <= 9.10.0 fail to enforce proper access controls which allows any authenticated user, including guests, to mark any channel inside any team as read for any user.
How severe is CVE-2024-43813?: CVE-2024-43813 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2024-43813 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-43813?: CVE-2024-43813 affects Mattermost. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-43813?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-43813 have an EU (EUVD) identifier?: Yes. CVE-2024-43813 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-40463.
When was CVE-2024-43813 published?: CVE-2024-43813 was published on 2024-08-22 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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