cve.bz

CVE-2020-15164

10.0 criticalEPSS 1.2%

Critical (10.0) in scratch-wiki scratch login. EPSS 1.2% chance of exploitation in the next 30 days.

in Scratch Login (MediaWiki extension) before version 1.1, any account can be logged into by using the same username with leading, trailing, or repeated underscore(s), since those are treated as whitespace and trimmed by MediaWiki. This affects all users on any wiki using this extension. Since version 1.1, comments by users whose usernames would be trimmed on MediaWiki are ignored when searching for the verification code.

Severity

CVSS 3.1

10.0 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
EPSS
1.2% chance of exploitation in the next 30 days; higher than 67% of CVEs (scores of 2026-10-31)
CWEs
CWE-74, CWE-287
Published
Modified
Record from
the NVD, synced

Affected

References

Check your stackJSON