What’s Vulnerable › Vulnerabilities

CVE-2021-46251

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-02-15 · updated 2026-06-17
• Weakness: CWE-79

Description

A reflected cross-site scripting (XSS) in ScratchOAuth2 before commit 1603f04e44ef67dde6ccffe866d2dca16defb293 allows attackers to execute arbitrary web scripts or HTML via a crafted POST request.

Affected products

• ScratchVerifier ScratchOAuth2: before 2021-04-12 — fixed in 2021-04-12

How to fix

Upgrade to a fixed version: ScratchVerifier ScratchOAuth2 2021-04-12. Check the vendor advisory for mitigations.

References

• https://github.com/ScratchVerifier/ScratchOAuth2/commit/1603f04e44ef67dde6ccffe866d2dca16defb293
• https://github.com/ScratchVerifier/ScratchOAuth2/commit/1603f04e44ef67dde6ccffe866d2dca16defb293

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