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CVE-2021-23900

25
FAUCET Score

CVE-2021-23900 describes a denial-of-service vulnerability in OWASP json-sanitizer versions prior to 1.2.2. Crafted input can cause the sanitizer to output invalid JSON or throw an unhandled exception, potentially disrupting applications. This high-severity vulnerability (CVSS 7.5) requires no user interaction or privileges, making it easily exploitable over a network. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.2CPE matchmatch criteria
cpe:2.3:a:owasp:json-sanitizer:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.10%
Probability of exploitation in next 30 days
EPSS Percentile
79.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0210 is in the 64th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 (2)

github_advisorypatch availablevia nvd_reference
View patch
mavenpatch availablevia ghsa
Product: com.mikesamuel:json-sanitizerFixed in: 1.2.2

Vendor Advisories (1)

mavenGHSA-8rf5-92jh-3vc9high

Uncaught Exception leading to Denial of Service in json-sanitizer

May 13, 2021

References

github.com / OWASP/json-sanitizer/commit/a37f594f7378a1c76b3283e0dab9e1ab1dc0247e
PatchThird Party Advisory
github.com / OWASP/json-sanitizer/compare/v1.2.1...v1.2.2
PatchThird Party Advisory
groups.google.com / g/json-sanitizer-support/c/dAW1AeNMoA0
Third Party Advisory