How severe is CVE-2021-46250?

CVE-2021-46250 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-46250 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46250?

CVE-2021-46250 affects Scratchoauth2 Project Scratchoauth2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-46250?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-46250 published?

CVE-2021-46250 was published on 2022-02-15 and last updated on 2026-06-17.

CVE-2021-46250

CVE-2021-46250 is a critical-severity vulnerability in Scratchoauth2 Project Scratchoauth2 with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
CVSS v2: 7.5
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Scratchoauth2 Project Scratchoauth2
Published: 2022-02-15
Last modified: 2026-06-17

Description

An issue in SOA2Login::commented of ScratchOAuth2 before commit a91879bd58fa83b09283c0708a1864cdf067c64a allows attackers to authenticate as other users on downstream components that rely on ScratchOAuth2.

Frequently asked questions

What is CVE-2021-46250?: An issue in SOA2Login::commented of ScratchOAuth2 before commit a91879bd58fa83b09283c0708a1864cdf067c64a allows attackers to authenticate as other users on downstream components that rely on ScratchOAuth2.
How severe is CVE-2021-46250?: CVE-2021-46250 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-46250 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46250?: CVE-2021-46250 affects Scratchoauth2 Project Scratchoauth2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46250?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-46250 published?: CVE-2021-46250 was published on 2022-02-15 and last updated on 2026-06-17.

References

https://github.com/ScratchVerifier/ScratchOAuth2/commit/a91879bd58fa83b09283c0708a1864cdf067c64a

Affected products (1)

cpe:2.3:a:scratchoauth2_project:scratchoauth2:*:*:*:*:*:scratch:*:*

More vulnerabilities in Scratchoauth2 Project Scratchoauth2

CVE-2021-29437 — High (CVSS 8.0): ScratchOAuth2 is an Oauth implementation for Scratch. Any ScratchOAuth2-related data normally accessible and modifiable…
CVE-2021-46249 — Medium (CVSS 6.5): An authorization bypass exploited by a user-controlled key in SpecificApps REST API in ScratchOAuth2 before commit…
CVE-2021-46251 — Medium (CVSS 6.1): A reflected cross-site scripting (XSS) in ScratchOAuth2 before commit 1603f04e44ef67dde6ccffe866d2dca16defb293 allows…

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