CVE-2022-36087
OAuthLib vulnerable DoS when attacker provides malicious IPV6 URI
MEDIUM 6.9EPSS 1.7%
OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. In OAuthLib versions 3.1.1 until 3.2.1, an attacker providing malicious redirect uri can cause denial of service. An attacker can also leverage usage of `uri_validate` functions depending where it is used. OAuthLib applications using OAuth2.0 provider support or use directly `uri_validate` are affected by this issue. Version 3.2.1 contains a patch. There are no known workarounds.
- Affected
- oauthlib
- CVSS v4.0 GitHub
- 6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - CVSS v3.1 NVD
- 6.5 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - CVSS v3.1 GITHUB
- 5.7 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H - EPSS
- 1.67% chance of exploitation in the next 30 days, 76th percentile
- Published
- 2022-09-09
- Updated
- 2025-04-22
Proof-of-concept exploits (1)
Security advisories
- oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py
- advisories/GHSA-3pgj-pg6c-r5p7