How severe is CVE-2023-2193?

CVE-2023-2193 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2023-2193 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-2193?

CVE-2023-2193 primarily affects Mattermost. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-2193?

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

When was CVE-2023-2193 published?

CVE-2023-2193 was published on 2023-04-20 and last updated on 2026-06-17.

CVE-2023-2193

CVE-2023-2193 is a medium-severity vulnerability in Mattermost with a CVSS 3.x base score of 6.5. 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-862.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Mattermost
Published: 2023-04-20
Last modified: 2026-06-17

Description

Mattermost fails to invalidate existing authorization codes when deauthorizing an OAuth2 app, allowing an attacker possessing an authorization code to generate an access token.

Frequently asked questions

What is CVE-2023-2193?: Mattermost fails to invalidate existing authorization codes when deauthorizing an OAuth2 app, allowing an attacker possessing an authorization code to generate an access token.
How severe is CVE-2023-2193?: CVE-2023-2193 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2023-2193 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-2193?: CVE-2023-2193 primarily affects Mattermost. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-2193?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-2193 published?: CVE-2023-2193 was published on 2023-04-20 and last updated on 2026-06-17.

References

https://mattermost.com/security-updates/

Affected products (4)

cpe:2.3:a:mattermost:mattermost:7.1.7:*:*:*:*:*:*:*
cpe:2.3:a:mattermost:mattermost:7.7.3:*:*:*:*:*:*:*
cpe:2.3:a:mattermost:mattermost:7.8.2:*:*:*:*:*:*:*
cpe:2.3:a:mattermost:mattermost:7.9.1:*:*:*:*:*:*:*

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