How severe is CVE-2025-24896?

CVE-2025-24896 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-24896 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-24896?

CVE-2025-24896 affects Misskey. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-24896?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-24896 have an EU (EUVD) identifier?

Yes. CVE-2025-24896 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-3978.

When was CVE-2025-24896 published?

CVE-2025-24896 was published on 2025-02-11 and last updated on 2026-06-17.

CVE-2025-24896

CVE-2025-24896 is a high-severity vulnerability in Misskey with a CVSS 3.x base score of 8.1. 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-613.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-3978
Weakness: CWE-613
Affected product: Misskey
Published: 2025-02-11
Last modified: 2026-06-17

Description

Misskey is an open source, federated social media platform. Starting in version 12.109.0 and prior to version 2025.2.0-alpha.0, a login token named `token` is stored in a cookie for authentication purposes in Bull Dashboard, but this remains undeleted even after logout is performed. The primary affected users will be users who have logged into Misskey using a public PC or someone else's device, but it's possible that users who have logged out of Misskey before lending their PC to someone else could also be affected. Version 2025.2.0-alpha.0 contains a fix for this issue.

Frequently asked questions

What is CVE-2025-24896?: Misskey is an open source, federated social media platform. Starting in version 12.109.0 and prior to version 2025.2.0-alpha.0, a login token named `token` is stored in a cookie for authentication purposes in Bull Dashboard, but this remains undeleted even after logout is performed. The primary affected users will be users who have logged into Misskey using a public PC or someone else's device, but it's possible that users who have logged out of Misskey before lending their PC to someone else could also be affected. Version 2025.2.0-alpha.0 contains a fix for this issue.
How severe is CVE-2025-24896?: CVE-2025-24896 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-24896 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-24896?: CVE-2025-24896 affects Misskey. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-24896?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-24896 have an EU (EUVD) identifier?: Yes. CVE-2025-24896 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-3978.
When was CVE-2025-24896 published?: CVE-2025-24896 was published on 2025-02-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:*

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