Home/CVE/Sinatra before 2.0.2 has XSS via the 400 Bad Request page that occurs upon a params parser exception.
CVE

CVE-2018-11627

Sinatra before 2.0.2 has XSS via the 400 Bad Request page that occurs upon a params parser exception.

Sinatra before 2.0.2 has XSS via the 400 Bad Request page that occurs upon a params parser exception.

MEDIUM · CVSS 6.1 EPSS 0.00398
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

2
sinatrarb sinatra< 2.0.2
redhat cloudformsall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
RubyGems sinatra MODERATE fixed in 2.0.2
⚠

Public Exploits & PoCs

1
pocgithub.com · 1428github.com
▣

Scoring & Timeline

6.1
MEDIUM · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD31 May 2018 · 07:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
⚑

Vendor Advisories

4
suse-csafopenSUSE-SU-2024:11353-1
suse-csafopenSUSE-SU-2024:12033-1
rhsaRHSA-2019:0212Moderate
rhsaRHSA-2019:0315Moderate
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/sinatra/sinatra/commit/12786867d6faaceaec62c7c2cb5b0e2dc074d71aPatchThird Party Advisory
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