🛡️ CVE-2025-13836 — libpython
Description
Excessive read buffering DoS in http.client
When reading an HTTP response from a server, if no read amount is specified, the default behavior will be to use Content-Length. This allows a malicious server to cause the client to read large amounts of data into memory, potentially causing OOM or other DoS.
Affected software
CVE-2025-13836 is recorded against 3 packages.
- libpython
- python
- python-min
Timeline and source
Published on 11 May 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
mail.python.org (Web)
nvd.nist.gov (Web)
CVE-2025-13836 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| libpython | — | — |
| python | — | — |
| python-min | — | — |
Similar Threats
- High BIT-libpython-2026-4519
- Low BIT-libpython-2026-3479
- Medium BIT-libpython-2026-3644
- Low BIT-libpython-2025-13462
- Medium BIT-libpython-2026-2297
More CVE 2025 advisories
Browse all of CVE 2025 in the advisory index.
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