How severe is CVE-2024-21654?

CVE-2024-21654 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-21654 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21654?

CVE-2024-21654 affects Rubygems Rubygems.org. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-21654?

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

Does CVE-2024-21654 have an EU (EUVD) identifier?

Yes. CVE-2024-21654 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19280.

When was CVE-2024-21654 published?

CVE-2024-21654 was published on 2024-01-12 and last updated on 2026-06-17.

CVE-2024-21654

CVE-2024-21654 is a medium-severity vulnerability in Rubygems Rubygems.org with a CVSS 3.x base score of 4.8. 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 4.8)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-19280
Weakness: CWE-287
Affected product: Rubygems Rubygems.org
Published: 2024-01-12
Last modified: 2026-06-17

Description

Rubygems.org is the Ruby community's gem hosting service. Rubygems.org users with MFA enabled would normally be protected from account takeover in the case of email account takeover. However, a workaround on the forgotten password form allows an attacker to bypass the MFA requirement and takeover the account. This vulnerability has been patched in commit 0b3272a.

Frequently asked questions

What is CVE-2024-21654?: Rubygems.org is the Ruby community's gem hosting service. Rubygems.org users with MFA enabled would normally be protected from account takeover in the case of email account takeover. However, a workaround on the forgotten password form allows an attacker to bypass the MFA requirement and takeover the account. This vulnerability has been patched in commit 0b3272a.
How severe is CVE-2024-21654?: CVE-2024-21654 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-21654 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21654?: CVE-2024-21654 affects Rubygems Rubygems.org. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-21654?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-21654 have an EU (EUVD) identifier?: Yes. CVE-2024-21654 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19280.
When was CVE-2024-21654 published?: CVE-2024-21654 was published on 2024-01-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:rubygems:rubygems.org:*:*:*:*:*:*:*:*

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