How severe is CVE-2024-25126?

CVE-2024-25126 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2024-25126 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 35% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-25126?

CVE-2024-25126 primarily affects Rack. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-25126?

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

Does CVE-2024-25126 have an EU (EUVD) identifier?

Yes. CVE-2024-25126 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0462.

When was CVE-2024-25126 published?

CVE-2024-25126 was published on 2024-02-29 and last updated on 2026-06-17.

CVE-2024-25126

CVE-2024-25126 is a medium-severity vulnerability in Rack with a CVSS 3.x base score of 5.3. Its EPSS exploit-prediction score of 35% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-1333.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 35% (98th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0462
Weakness: CWE-1333
Affected product: Rack
Published: 2024-02-29
Last modified: 2026-06-17

Description

Rack is a modular Ruby web server interface. Carefully crafted content type headers can cause Rack’s media type parser to take much longer than expected, leading to a possible denial of service vulnerability (ReDos 2nd degree polynomial). This vulnerability is patched in 3.0.9.1 and 2.2.8.1.

Frequently asked questions

What is CVE-2024-25126?: Rack is a modular Ruby web server interface. Carefully crafted content type headers can cause Rack’s media type parser to take much longer than expected, leading to a possible denial of service vulnerability (ReDos 2nd degree polynomial). This vulnerability is patched in 3.0.9.1 and 2.2.8.1.
How severe is CVE-2024-25126?: CVE-2024-25126 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2024-25126 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 35% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-25126?: CVE-2024-25126 primarily affects Rack. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-25126?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-25126 have an EU (EUVD) identifier?: Yes. CVE-2024-25126 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0462.
When was CVE-2024-25126 published?: CVE-2024-25126 was published on 2024-02-29 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

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CVE-2026-34827 — High (CVSS 7.5): Rack is a modular Ruby web server interface. From versions 3.0.0.beta1 to before 3.1.21, and 3.2.0 to before 3.2.6,…
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