CVE-2025-13836
- Source
- https://cve.org/CVERecord?id=CVE-2025-13836
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-13836.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-13836
- Aliases
- Downstream
- Related
- Published
- 2025-12-01T18:02:38.483Z
- Modified
- 2026-06-03T04:02:46.163410611Z
- Severity
-
- 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L CVSS Calculator
- Summary
- Excessive read buffering DoS in http.client
- Details
-
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.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/13xxx/CVE-2025-13836.json", "cna_assigner": "PSF" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/13xxx/CVE-2025-13836.json
- https://mail.python.org/archives/list/security-announce@python.org/thread/OQ6G7MKRQIS3OAREC3HNG3D2DPOU34XO/
- https://nvd.nist.gov/vuln/detail/CVE-2025-13836
- https://github.com/python/cpython/issues/119451
- https://github.com/python/cpython/commit/14b1fdb0a94b96f86fc7b86671ea9582b8676628
- https://github.com/python/cpython/commit/289f29b0fe38baf2d7cb5854f4bb573cc34a6a15
- https://github.com/python/cpython/commit/4ce27904b597c77d74dd93f2c912676021a99155
- https://github.com/python/cpython/commit/5a4c4a033a4a54481be6870aa1896fad732555b5
- https://github.com/python/cpython/commit/5dc101675fd22918facbbe0fecdc821502beaaf0
- https://github.com/python/cpython/commit/afc40bdd3dd71f343fd9016f6d8eebbacbd6587c
- https://github.com/python/cpython/pull/119454
- https://github.com/python/cpython