How severe is CVE-2022-48364?

CVE-2022-48364 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 low, integrity none, and availability none.

Is CVE-2022-48364 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-48364?

CVE-2022-48364 affects Joinmastodon Mastodon. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-48364?

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

When was CVE-2022-48364 published?

CVE-2022-48364 was published on 2023-03-06 and last updated on 2026-06-17.

CVE-2022-48364

CVE-2022-48364 is a medium-severity vulnerability in Joinmastodon Mastodon 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-287.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Joinmastodon Mastodon
Published: 2023-03-06
Last modified: 2026-06-17

Description

The undo_mark_statuses_as_sensitive method in app/services/approve_appeal_service.rb in Mastodon 3.5.x before 3.5.3 does not use the server's representative account, resulting in moderator identity disclosure when a moderator approves the appeal of a user whose status update was marked as sensitive.

Frequently asked questions

What is CVE-2022-48364?: The undo_mark_statuses_as_sensitive method in app/services/approve_appeal_service.rb in Mastodon 3.5.x before 3.5.3 does not use the server's representative account, resulting in moderator identity disclosure when a moderator approves the appeal of a user whose status update was marked as sensitive.
How severe is CVE-2022-48364?: CVE-2022-48364 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 low, integrity none, and availability none.
Is CVE-2022-48364 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-48364?: CVE-2022-48364 affects Joinmastodon Mastodon. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-48364?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-48364 published?: CVE-2022-48364 was published on 2023-03-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*

More vulnerabilities in Joinmastodon Mastodon

CVE-2023-36460 — Critical (CVSS 9.9): Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 3.5.0 and prior to…
CVE-2022-2166 — Critical (CVSS 9.8): Improper Restriction of Excessive Authentication Attempts in GitHub repository mastodon/mastodon prior to 4.0.0.
CVE-2022-24307 — Critical (CVSS 9.8): Mastodon before 3.3.2 and 3.4.x before 3.4.6 has incorrect access control because it does not compact incoming signed…
CVE-2018-21018 — Critical (CVSS 9.8): Mastodon before 2.6.3 mishandles timeouts of incompletely established sessions.
CVE-2024-23832 — Critical (CVSS 9.4): Mastodon is a free, open-source social network server based on ActivityPub Mastodon allows configuration of LDAP for…
CVE-2023-36459 — Critical (CVSS 9.3): Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 1.3 and prior to…

All CVEs affecting Joinmastodon Mastodon →

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →