PatchTheCVECVE-2022-40899: An issue discovered in Python Charmers Future 0.18.2 and earlier allows remote attackers to cause a denial of
CVE-2022-40899 is a high-severity flaw (CVSS 7.5) affecting python-future. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An issue discovered in Python Charmers Future 0.18.2 and earlier allows remote attackers to cause a denial of service via crafted Set-Cookie header from malicious web server.
Why this priority
- High severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.9% (top 20%) |
| CISA exploited list | No |
| Weakness | CWE-400 |
| Published | 2022-12-23 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2022-40899?
python-future: upgrade to newer than 0.18.2. Exact commands for each OS are on this page.
Is CVE-2022-40899 being exploited?
CVE-2022-40899 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2022-40899 affect?
CVE-2022-40899 affects python-future. Severity is high (CVSS 7.5). An issue discovered in Python Charmers Future 0.18.2 and earlier allows remote attackers to cause a denial of service via crafted Set-Cookie header from malicious web server.
How urgent is CVE-2022-40899?
Priority 56/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action