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Vulnerability · NVD

CVE-2020-8492

CVE-2020-8492, medium severity (CVSS 6.5): 3 tracked apps concerned, all fixed or indeterminable on their current version.

Severity (CVSS)
6.5

NVD scale

Exploitation
6.6 %

EPSS, predicted over 30 days

Tracked apps
3
Still exposed
0

Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.

Attack vector : Network No privileges required
Show raw CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS 6.62% above median percentile 93.6%

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

  • Python 3.12 Windows winget:Python.Python.3.12
    Affected ≥2.7.0 ≤2.7.17 Fixed in > 2.7.17 Latest tracked 3.12.10 patched
  • Python 3.13 Windows winget:Python.Python.3.13
    Affected ≥2.7.0 ≤2.7.17 Fixed in > 2.7.17 Latest tracked 3.13.15 patched
  • Python 3.14 Windows winget:Python.Python.3.14
    Affected ≥2.7.0 ≤2.7.17 Fixed in > 2.7.17 Latest tracked 3.14.7 patched
Vulnerable CPE configurations (5)
Vendor Product Versions
python python
All platforms (wildcard)
 ≥2.7.0 ≤2.7.17
python python
All platforms (wildcard)
 ≥3.5.0 ≤3.5.9
python python
All platforms (wildcard)
 ≥3.6.0 ≤3.6.10
python python
All platforms (wildcard)
 ≥3.7.0 ≤3.7.6
python python
All platforms (wildcard)
 ≥3.8.0 ≤3.8.1
View on NVD ↗ Advisory · bugs.python.org Advisory · github.com

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