Description
The Bitly oauth2_proxy in version 2.1 and earlier was affected by an open redirect vulnerability during the start and termination of the 2-legged OAuth flow. This issue was caused by improper input validation and a violation of RFC-6819
References (2)
Core 2
Core References
Patch, Third Party Advisory x_refsource_confirm
https://github.com/bitly/oauth2_proxy/pull/359
Technical Description x_refsource_misc
https://tools.ietf.org/html/rfc6819#section-5.2.3.5
Scores
CVSS v3
6.1
EPSS
0.0100
EPSS Percentile
58.1%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Details
CWE
CWE-601
Status
published
Products (2)
bitly/oauth2_proxy
0 - 2.2.0Go
oauth2_proxy_project/oauth2_proxy
< 2.1
Published
Jul 17, 2017
Tracked Since
Feb 18, 2026