CVE-2017-18076
In strategy.rb in OmniAuth before 1.3.2, the authenticity_token value is improperly protected because POST (in addition to GET) parameters are stored in the session and become available in the environment of the callback phase.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In strategy.rb in OmniAuth before 1.3.2, the authenticity_token value is improperly protected because POST (in addition to GET) parameters are stored in the session and become available in the environment of the callback phase.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 2.13% probability · 82th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- omniauth/omniauth · debian/debian linux
- Source
- cve@mitre.org
EPSS 2.1% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://bugs.debian.org/888523Issue Tracking, Third Party Advisory
- https://github.com/omniauth/omniauth/pull/867Patch, Third Party Advisory
- https://github.com/omniauth/omniauth/pull/867/commits/71866c5264122e196847a3980c43051446a03e9bPatch, Third Party Advisory
- https://www.debian.org/security/2018/dsa-4109Third Party Advisory
- https://bugs.debian.org/888523Issue Tracking, Third Party Advisory
- https://github.com/omniauth/omniauth/pull/867Patch, Third Party Advisory
- https://github.com/omniauth/omniauth/pull/867/commits/71866c5264122e196847a3980c43051446a03e9bPatch, Third Party Advisory
- https://www.debian.org/security/2018/dsa-4109Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.