VulnerabilityModified
CVE-2018-11627
Sinatra before 2.0.2 has XSS via the 400 Bad Request page that occurs upon a params parser exception.
MEDIUM 6.1EPSS 2.16%
Does this matter?
Lower severity and a low EPSS score (2.16%). Track it; it rarely justifies an emergency change on its own.
Description
Sinatra before 2.0.2 has XSS via the 400 Bad Request page that occurs upon a params parser exception.
- CVSS 3.0
- 6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 2.16% probability · 82th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- sinatrarb/sinatra · redhat/cloudforms
- Source
- cve@mitre.org
EPSS 2.2% 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://access.redhat.com/errata/RHSA-2019:0212Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0315Third Party Advisory
- https://github.com/sinatra/sinatra/commit/12786867d6faaceaec62c7c2cb5b0e2dc074d71aPatch, Third Party Advisory
- https://github.com/sinatra/sinatra/issues/1428Exploit, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0212Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0315Third Party Advisory
- https://github.com/sinatra/sinatra/commit/12786867d6faaceaec62c7c2cb5b0e2dc074d71aPatch, Third Party Advisory
- https://github.com/sinatra/sinatra/issues/1428Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.