High · published December 1, 2025
⚠️ If no read amount is specified, a malicious server could trick your client into gulping down an excessive amount of data! 💥 Think of it like a restaurant giving you a bottomless drink without specifying a limit — you could end up drowning in soda! This vulnerability lets an attacker fill up your memory until it overflows, just like a never-ending soda fountain could overflow your table. An attacker could exploit this by causing your application to read massive amounts of data into memory, potentially leading to an out-of-memory (OOM) condition or even a denial-of-service (DoS) scenario. This could interrupt service and leave users frustrated, not to mention it can take a toll on your resources!
Think of it like a restaurant giving you a bottomless drink without specifying a limit — you could end up drowning in soda! This vulnerability lets an attacker fill up your memory until it overflows, just like a never-ending soda fountain could overflow your table. This vulnerability occurs when reading an HTTP response without a specified read amount, defaulting to the Content-Length. If a malicious server controls this value, it can force the client to consume excessive data, leading to performance degradation or crashes.
An attacker could exploit this by causing your application to read massive amounts of data into memory, potentially leading to an out-of-memory (OOM) condition or even a denial-of-service (DoS) scenario. This could interrupt service and leave users frustrated, not to mention it can take a toll on your resources! To mitigate this issue, ensure you specify a read amount when handling HTTP responses. Also, consider implementing rate limiting or monitoring to detect unexpected large data reads. Always stay updated with security patches related to your server's HTTP handling if available. You've got this! With these steps in place, you'll keep your systems stable and secure. 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| python/python | < 3.10.20 | 3.10.20 |
| python/python | ≥ 3.11.0, < 3.11.15 | 3.11.15 |
| python/python | ≥ 3.12.0, < 3.12.13 | 3.12.13 |
| python/python | ≥ 3.13.0, < 3.13.11 | 3.13.11 |
| python/python | all versions | — |
| python/python | all versions | — |
| python/python | all versions | — |