github - ghsa-399h-rrqc-rpgv

GHSA-399H-RRQC-RPGV

Vulnerability from github – Published: 2025-12-01 18:30 – Updated: 2025-12-02 18:30

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.

Severity ?

6.3 (Medium)


                  
                    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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-13836"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-01T18:16:04Z",
    "severity": "MODERATE"
  },
  "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.",
  "id": "GHSA-399h-rrqc-rpgv",
  "modified": "2025-12-02T18:30:30Z",
  "published": "2025-12-01T18:30:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-13836"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/issues/119451"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/pull/119454"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/4ce27904b597c77d74dd93f2c912676021a99155"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/5a4c4a033a4a54481be6870aa1896fad732555b5"
    },
    {
      "type": "WEB",
      "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/OQ6G7MKRQIS3OAREC3HNG3D2DPOU34XO"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2025-13836 (GCVE-0-2025-13836)

Vulnerability from cvelistv5 – Published: 2025-12-01 18:02 – Updated: 2025-12-02 18:29

Summary

Severity ?

6.3 (Medium)


                        
                          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

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

PSF

References

URL

Tags

	https://github.com/python/cpython/issues/119451	issue-tracking
	https://github.com/python/cpython/pull/119454	patch
	https://github.com/python/cpython/commit/4ce27904…	patch
	https://github.com/python/cpython/commit/5a4c4a03…	patch
	https://mail.python.org/archives/list/security-an…	vendor-advisory

Impacted products

	Vendor	Product	Version
	Python Software Foundation	CPython	Affected: 0 , < 3.14.1 (python) Affected: 3.15.0a1 , < 3.15.0 (python)

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                "id": "CVE-2025-13836",
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-399H-RRQC-RPGV

CVE-2025-13836 (GCVE-0-2025-13836)

Tags

Sightings

Nomenclature