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CVE-2020-13973

21
FAUCET Score

CVE-2020-13973 is a Cross-Site Scripting (XSS) vulnerability affecting OWASP json-sanitizer versions prior to 1.2.1. An attacker can manipulate JSON input and adjacent HTML script elements to confuse the parser, leading to non-script content being executed as JavaScript. This vulnerability has a CVSS score of 6.1 (Medium), indicating a network-based attack requiring user interaction, with potential for low impact to confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.1CPE matchmatch criteria
cpe:2.3:a:owasp:json-sanitizer:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.12%
Probability of exploitation in next 30 days
EPSS Percentile
62.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0112 is in the 75th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

mavenpatch availablevia ghsa
Product: com.mikesamuel:json-sanitizerFixed in: 1.2.1

Vendor Advisories (1)

mavenGHSA-g8jj-899q-8x3jmedium

Cross-site scripting in json-sanitizer

Feb 10, 2022

References

github.com / OWASP/json-sanitizer/pull/20
ExploitThird Party Advisory