HTML Injection Vulnerability in OWASP JSON Sanitizer
CVE-2021-23899

9.8CRITICAL

Key Information:

Vendor

Owasp

Status
Json-sanitizer
Vendor
CVE Published:
13 January 2021

What is CVE-2021-23899?

The OWASP JSON Sanitizer prior to version 1.2.2 is vulnerable to an HTML injection flaw that allows an attacker to manipulate crafted input, potentially leading to the emission of unauthorized closing SCRIPT tags and CDATA section delimiters. This vulnerability permits the injection of arbitrary HTML or XML into embedding documents, posing significant risks to applications that rely on this sanitization mechanism.

References

https://github.com/OWASP/json-sanitizer/compare/v1.2.1......
x_refsource_MISC
https://groups.google.com/g/json-sanitizer-support/c/dAW1...
x_refsource_MISC
https://github.com/OWASP/json-sanitizer/commit/a37f594f73...
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.