Vulnerability GHSA-9p9m-jm8w-94p2
Medium Risk
MEDIUM RISK
CVSS Score: 5.3
Score Range: 4.0–6.9
Medium severity vulnerabilities (CVSS 4.0–6.9). Important issues that meaningfully reduce security confidence.
5 years ago
May 07, 2021 at 03:50 PM UTC
Improper Handling of Highly Compressed Data (Data Amplification) and Memory Allocation with Excessive Size Value in eventlet
0.10.0 - 0.11.0 and 0.12.1 - 0.14.0 and 0.15.2 and 0.16.1 and 0.17.4 and 0.18.2 - 0.30.3
0.10.0 - 0.11.0 and 0.12.1 - 0.14.0 and 0.15.2 and 0.16.1 and 0.17.4 and 0.18.2 - 0.30.3
Summary
Improper Handling of Highly Compressed Data (Data Amplification) and Memory Allocation with Excessive Size Value in eventlet
Details
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: [email protected] or https://t.me/temotor
Related Vulnerabilities
Other vulnerabilities affecting the same packages
Medium Risk
4 months ago
Potential DoS via the Tudoor mechanism in eventlet and dnspython
0.2 and 0.5.3 and 0.6.1 and 0.7 and 0.8 and 0.8.16 and 0.9.17 - 0.11.0 and 0.12.1 - 0.14.0 and 0.15.2 and 0.16.1 and 0.17.4 and 0.18.2 - 0.33.3 and 0.34.1 - 0.35.1 PYSEC-2026-2472
0.2 and 0.5.3 and 0.6.1 and 0.7 and 0.8 and 0.8.16 and 0.9.17 - 0.11.0 and 0.12.1 - 0.14.0 and 0.15.2 and 0.16.1 and 0.17.4 and 0.18.2 - 0.33.3 and 0.34.1 - 0.35.1 PYSEC-2026-2472
Unknown
4 months ago
Eventlet affected by HTTP request smuggling in unparsed trailers
0.2 and 0.5.3 and 0.6.1 and 0.7 and 0.8 and 0.8.16 and 0.9.17 - 0.11.0 and 0.12.1 - 0.14.0 and 0.15.2 and 0.16.1 and 0.17.4 and 0.18.2 - 0.33.3 and 0.34.1 - 0.40.2 PYSEC-2026-1350
0.2 and 0.5.3 and 0.6.1 and 0.7 and 0.8 and 0.8.16 and 0.9.17 - 0.11.0 and 0.12.1 - 0.14.0 and 0.15.2 and 0.16.1 and 0.17.4 and 0.18.2 - 0.33.3 and 0.34.1 - 0.40.2 PYSEC-2026-1350
Medium Risk
1 year ago
Eventlet affected by HTTP request smuggling in unparsed trailers
0.2 and 0.5.3 and 0.6.1 and 0.7 and 0.8 and 0.8.16 and 0.9.17 - 0.11.0 and 0.12.1 - 0.14.0 and 0.15.2 and 0.16.1 and 0.17.4 and 0.18.2 - 0.33.3 and 0.34.1 - 0.40.2 GHSA-hw6f-rjfj-j7j7
0.2 and 0.5.3 and 0.6.1 and 0.7 and 0.8 and 0.8.16 and 0.9.17 - 0.11.0 and 0.12.1 - 0.14.0 and 0.15.2 and 0.16.1 and 0.17.4 and 0.18.2 - 0.33.3 and 0.34.1 - 0.40.2 GHSA-hw6f-rjfj-j7j7
Medium Risk
2 years ago
Potential DoS via the Tudoor mechanism in eventlet and dnspython
0.2 and 0.5.3 and 0.6.1 and 0.7 and 0.8 and 0.8.16 and 0.9.17 - 0.11.0 and 0.12.1 - 0.14.0 and 0.15.2 and 0.16.1 and 0.17.4 and 0.18.2 - 0.33.3 and 0.34.1 - 0.35.1 GHSA-3rq5-2g8h-59hc
0.2 and 0.5.3 and 0.6.1 and 0.7 and 0.8 and 0.8.16 and 0.9.17 - 0.11.0 and 0.12.1 - 0.14.0 and 0.15.2 and 0.16.1 and 0.17.4 and 0.18.2 - 0.33.3 and 0.34.1 - 0.35.1 GHSA-3rq5-2g8h-59hc
Unknown
5 years ago
No summary available
0.10.0 - 0.11.0 and 0.12.1 - 0.14.0 and 0.15.2 and 0.16.1 and 0.17.4 and 0.18.2 - 0.30.3 PYSEC-2021-12
0.10.0 - 0.11.0 and 0.12.1 - 0.14.0 and 0.15.2 and 0.16.1 and 0.17.4 and 0.18.2 - 0.30.3 PYSEC-2021-12
Impacted packages
Timeline
Published
5 years ago
May 07, 2021 at 03:50 PM UTC
Fixed (0.31.0)
5 years ago
May 05, 2021 at 02:29 PM UTC
Last Modified
4 months ago
July 08, 2026 at 06:27 AM UTC