How severe is CVE-2025-58068?

CVE-2025-58068 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-58068 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-58068?

CVE-2025-58068 affects Eventlet. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-58068?

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

Does CVE-2025-58068 have an EU (EUVD) identifier?

Yes. CVE-2025-58068 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26392.

When was CVE-2025-58068 published?

CVE-2025-58068 was published on 2025-08-29 and last updated on 2026-06-17.

CVE-2025-58068

CVE-2025-58068 is a critical-severity vulnerability in Eventlet with a CVSS 3.x base score of 9.1. 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-444.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 6.3
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-26392
Weakness: CWE-444
Affected product: Eventlet
Published: 2025-08-29
Last modified: 2026-06-17

Description

Eventlet is a concurrent networking library for Python. Prior to version 0.40.3, the Eventlet WSGI parser is vulnerable to HTTP Request Smuggling due to improper handling of HTTP trailer sections. This vulnerability could enable attackers to, bypass front-end security controls, launch targeted attacks against active site users, and poison web caches. This problem has been patched in Eventlet 0.40.3 by dropping trailers which is a breaking change if a backend behind eventlet.wsgi proxy requires trailers. A workaround involves not using eventlet.wsgi facing untrusted clients.

Frequently asked questions

What is CVE-2025-58068?: Eventlet is a concurrent networking library for Python. Prior to version 0.40.3, the Eventlet WSGI parser is vulnerable to HTTP Request Smuggling due to improper handling of HTTP trailer sections. This vulnerability could enable attackers to, bypass front-end security controls, launch targeted attacks against active site users, and poison web caches. This problem has been patched in Eventlet 0.40.3 by dropping trailers which is a breaking change if a backend behind eventlet.wsgi proxy requires trailers. A workaround involves not using eventlet.wsgi facing untrusted clients.
How severe is CVE-2025-58068?: CVE-2025-58068 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-58068 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-58068?: CVE-2025-58068 affects Eventlet. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-58068?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-58068 have an EU (EUVD) identifier?: Yes. CVE-2025-58068 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26392.
When was CVE-2025-58068 published?: CVE-2025-58068 was published on 2025-08-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:eventlet:eventlet:*:*:*:*:*:*:*:*

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