An authorization bypass exploited by a user-controlled key in SpecificApps REST API in ScratchOAuth2 before commit d856dc704b2504cd3b92cf08…

published 2022-02-15 4y ago modified 2026-06-17 4mo ago also EUVD-2021-32949

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits: 0; none known

An authorization bypass exploited by a user-controlled key in SpecificApps REST API in ScratchOAuth2 before commit d856dc704b2504cd3b92cf089fdd366dd40775d6 allows app owners to set flags that indicate whether an app is verified on their own apps.

Patch / fix

fixed in 1 links 1

scratchoauth2_project scratchoauth2 2021-04-12

github.com/ScratchVerifier/ScratchOAuth2@d856dc7 commit

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Exploit prediction

0.64% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AC:L/AV:N/A:N/C:N/I:H/PR:L/S:U/UI:N
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:N/I:P/A:N

Classification

Weakness

CWE-639 Authorization Bypass Through User-Controlled Key

References

github.com /ScratchVerifier/ScratchOAuth2/commit/d856dc704b2504cd3b92cf089fdd366dd40775d6
patch, third-party-advisory

Sources

CVE List CVE-2021-46249
NVD CVE-2021-46249

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