CVE-2020-13973

MEDIUM

Owasp Json-sanitizer < 1.2.1 - XSS

Title source: rule

Description

OWASP json-sanitizer before 1.2.1 allows XSS. An attacker who controls a substring of the input JSON, and controls another substring adjacent to a SCRIPT element in which the output is embedded as JavaScript, may be able to confuse the HTML parser as to where the SCRIPT element ends, and cause non-script content to be interpreted as JavaScript.

Exploits (2)

nomisec WORKING POC

by shoucheng3 · poc

https://github.com/shoucheng3/OWASP__json-sanitizer_CVE-2020-13973_1-2-0

View Code ZIP pw:eip

nomisec WRITEUP

by epicosy · poc

https://github.com/epicosy/json-sanitizer

View Code ZIP pw:eip

References (1)

[Exploit, Third Party Advisory] https://github.com/OWASP/json-sanitizer/pull/20

Scores

CVSS v3 6.1

EPSS 0.0047

EPSS Percentile 64.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE

CWE-79

Status published

Products (2)

com.mikesamuel/json-sanitizer 0 - 1.2.1Maven

owasp/json-sanitizer < 1.2.1

Published Jun 09, 2020

Tracked Since Feb 18, 2026