CVE-2021-46251

FAUCET Score

CVE-2021-46251 is a reflected cross-site scripting (XSS) vulnerability affecting ScratchOAuth2 before commit 1603f04e44ef67dde6ccffe866d2dca16defb293. This medium-severity vulnerability (CVSS 6.1) allows unauthenticated attackers to execute arbitrary web scripts or HTML in a victim's browser via a crafted POST request, requiring user interaction. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage regarding this CVE.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 2021-04-12CPE matchmatch criteria	cpe:2.3:a:scratchoauth2_project:scratchoauth2::::::scratch::*

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

0.56%

Probability of exploitation in next 30 days

EPSS Percentile

43.4%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0056 is in the 46th 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)

github_advisorypatch availablevia nvd_reference

View patch

References

github.com / ScratchVerifier/ScratchOAuth2/commit/1603f04e44ef67dde6ccffe866d2dca16defb293

PatchThird Party Advisory