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PyPI package

eventlet

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

Open advisories

3 actionable advisories, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Medium, CVSS 6.3PyPIAmendedPublished

    Eventlet affected by HTTP request smuggling in unparsed trailers

    CVE-2025-58068 · GHSA-hw6f-rjfj-j7j7

    Affected
    • PyPI eventlet < 0.40.3
    Fixed in
    0.40.3· Vendor fix available
    Issue
    Impact 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 - Poison web caches Patches Problem has been patched in eventlet 0.40.3. The patch just drops trailers. If a backend behind eventlet.wsgi proxy requires trailers, then this patch BREAKS your setup. Workarounds Do not use eventlet.wsgi facing untrusted clients. References - Patch https://github.com/eventlet/eventlet/pull/1062 - This issue is similar to https://github.com/advisories/GHSA-9548-qrrj-x5pj

    Recommended action: Upgrade to 0.40.3 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:osv.dev (1)github.com (2)Source checked Evidence →
  2. Medium, CVSS 5.9PyPIAmendedPublished

    Potential DoS via the Tudoor mechanism in eventlet and dnspython

    CVE-2023-29483 · GHSA-3rq5-2g8h-59hc

    Affected
    • PyPI eventlet < 0.35.2
    Fixed in
    0.35.2· Vendor fix available
    Issue
    eventlet before 0.35.2, as used in dnspython before 2.6.0, allows remote attackers to interfere with DNS name resolution by quickly sending an invalid packet from the expected IP address and source port, aka a "TuDoor" attack. In other words, dnspython does not have the preferred behavior in which the DNS name resolution algorithm would proceed, within the full time window, in order to wait for a valid packet. NOTE: dnspython 2.6.0 is unusable for a different reason that was addressed in 2.6.1.

    Recommended action: Upgrade to 0.35.2 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:osv.dev (1)github.com (2)Source checked Evidence →
  3. Medium, CVSS 6.9PyPIAmendedPublished

    Improper Handling of Highly Compressed Data (Data Amplification) and Memory Allocation with Excessive Size Value in eventlet

    CVE-2021-21419 · GHSA-9p9m-jm8w-94p2

    Affected
    • PyPI eventlet >= 0.10, < 0.31.0
    Fixed in
    0.31.0· Vendor fix available
    Issue
    Impact A websocket peer may exhaust memory on Eventlet side by sending very large websocket frames. Malicious peer may exhaust memory on Eventlet side by sending highly compressed data frame. Patches Version 0.31.0 restricts websocket frame to reasonable limits. Workarounds Restricting memory usage via OS limits would help against overall machine exhaustion. No workaround to protect Eventlet process. For more information If you have any questions or comments about this advisory: Open an issue in eventlet Contact current maintainers. At 2021-03: temotor@gmail.com or https://t.me/temotor

    Recommended action: Upgrade to 0.31.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:osv.dev (1)github.com (2)Source checked Evidence →