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CVE-2020-8923

21
FAUCET Score

CVE-2020-8923 describes an improper HTML sanitization vulnerability in Dart versions up to 2.7.1 and dev versions up to 2.8.0-dev.16.0. An attacker can leverage DOM Clobbering to bypass sanitization and inject custom HTML/JavaScript, leading to Cross-Site Scripting (XSS). With a CVSS score of 6.1 (Medium), this vulnerability requires user interaction and network access, potentially resulting in 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
< 2.7.2CPE matchmatch criteria
cpe:2.3:a:dart:dart_software_development_kit:*:*:*:*:*:*:*:*
2.8.0CPE matchmatch criteria
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev0.0:*:*:*:*:*:*
2.8.0CPE matchmatch criteria
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev1.0:*:*:*:*:*:*
2.8.0CPE matchmatch criteria
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev10.0:*:*:*:*:*:*
2.8.0CPE matchmatch criteria
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev11.0:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.32%
Probability of exploitation in next 30 days
EPSS Percentile
23.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0032 is in the 24th percentile among its peer group of 26,219 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

Remediation records are not available for this CVE.

References

github.com / dart-lang/sdk/security/advisories/GHSA-hfq3-v9pv-p627
Third Party Advisory