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CVE-2025-58068

Eventlet vulnerability

9.1 CRITICALEPSS 0.39%
  1. Published29 Aug 2025

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Eventlet< 0.40.3

Remediation

Fixed in
Eventlet≥ 0.40.3

References

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Frequently asked

Is CVE-2025-58068 being actively exploited?

CVE-2025-58068 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.39%.

How severe is CVE-2025-58068?

CVE-2025-58068 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.39% probability of exploitation.

Which products are affected by CVE-2025-58068?

Affected products include Eventlet.

How do I fix CVE-2025-58068?

Upgrade affected software to a fixed version, for example Eventlet 0.40.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-58068 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.