CVE-2024-52590
CVE-2024-52590 is a medium-severity vulnerability in Misskey 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-20.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v4: 8.8
- EPSS exploit prediction: 0% (25th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-46198
- Weakness: CWE-20
- Affected product: Misskey
- Published:
- Last modified:
Description
Misskey is an open source, federated social media platform. In affected versions missing validation in `ApRequestService.signedGet` allows an attacker to create fake user profiles that appear to be from a different instance than the one where they actually exist. These profiles can be used to impersonate existing users from the target instance. Vulnerable Misskey instances will accept spoofed users as valid, allowing an attacker to impersonate users on another instance. Attackers have full control of the spoofed user and can post, renote, or otherwise interact like a real account. This issue has been addressed in version 2024.11.0-alpha.3. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Frequently asked questions
- What is CVE-2024-52590?
- Misskey is an open source, federated social media platform. In affected versions missing validation in `ApRequestService.signedGet` allows an attacker to create fake user profiles that appear to be from a different instance than the one where they actually exist. These profiles can be used to impersonate existing users from the target instance. Vulnerable Misskey instances will accept spoofed users as valid, allowing an attacker to impersonate users on another instance. Attackers have full control of the spoofed user and can post, renote, or otherwise interact like a real account. This issue has been addressed in version 2024.11.0-alpha.3. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- How severe is CVE-2024-52590?
- CVE-2024-52590 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2024-52590 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-52590?
- CVE-2024-52590 primarily affects Misskey. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2024-52590?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2024-52590 have an EU (EUVD) identifier?
- Yes. CVE-2024-52590 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-46198.
- When was CVE-2024-52590 published?
- CVE-2024-52590 was published on 2024-12-18 and last updated on 2026-06-17.
References
Affected products (7)
- cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:*
- cpe:2.3:a:misskey:misskey:2024.8.0:rc3:*:*:*:*:*:*
- cpe:2.3:a:misskey:misskey:2024.8.0:rc4:*:*:*:*:*:*
- cpe:2.3:a:misskey:misskey:2024.8.0:rc5:*:*:*:*:*:*
- cpe:2.3:a:misskey:misskey:2024.11.0:alpha0:*:*:*:*:*:*
- cpe:2.3:a:misskey:misskey:2024.11.0:alpha1:*:*:*:*:*:*
- cpe:2.3:a:misskey:misskey:2024.11.0:alpha2:*:*:*:*:*:*
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