Security Vulnerabilities - CVEs Published In April 2021
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. The Special:AbuseFilter/examine form allowed for the disclosure of suppressed MediaWiki usernames to unprivileged users.
CVSS Score
4.3
EPSS Score
0.002
Published
2021-04-22
An issue was discovered in the CommentBox extension for MediaWiki through 1.35.2. Via crafted configuration variables, a malicious actor could introduce XSS payloads into various layers.
CVSS Score
5.4
EPSS Score
0.003
Published
2021-04-22
An issue was discovered in the PageForms extension for MediaWiki through 1.35.2. Crafted payloads for Token-related query parameters allowed for XSS on certain PageForms-managed MediaWiki pages.
CVSS Score
6.1
EPSS Score
0.003
Published
2021-04-22
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. It incorrectly executed certain rules related to blocking accounts after account creation. Such rules would allow for user accounts to be created while blocking only the IP address used to create an account (and not the user account itself). Such rules could also be used by a nefarious, unprivileged user to catalog and enumerate any number of IP addresses related to these account creations.
CVSS Score
5.4
EPSS Score
0.001
Published
2021-04-22
An issue was discovered in the CheckUser extension for MediaWiki through 1.35.2. MediaWiki usernames with trailing whitespace could be stored in the cu_log database table such that denial of service occurred for certain CheckUser extension pages and functionality. For example, the attacker could turn off Special:CheckUserLog and thus interfere with usage tracking.
CVSS Score
6.5
EPSS Score
0.007
Published
2021-04-22
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. It improperly handled account blocks for certain automatically created MediaWiki user accounts, thus allowing nefarious users to remain unblocked.
CVSS Score
5.4
EPSS Score
0.001
Published
2021-04-22
An issue was discovered in the Oauth extension for MediaWiki through 1.35.2. It did not validate the oarc_version (aka oauth_registered_consumer.oarc_version) parameter's length.
CVSS Score
7.5
EPSS Score
0.002
Published
2021-04-22
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. The page_recent_contributors leaked the existence of certain deleted MediaWiki usernames, related to rev_deleted.
CVSS Score
5.3
EPSS Score
0.002
Published
2021-04-22
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. It incorrectly logged sensitive suppression deletions, which should not have been visible to users with access to view AbuseFilter log data.
CVSS Score
4.3
EPSS Score
0.002
Published
2021-04-22
Discord-Recon is a bot for the Discord chat service. Versions of Discord-Recon 0.0.3 and prior contain a vulnerability in which a remote attacker is able to overwrite any file on the system with the command results. This can result in remote code execution when the user overwrite important files on the system. As a workaround, bot maintainers can edit their `setting.py` file then add `<` and `>` into the `RCE` variable inside of it to fix the issue without an update. The vulnerability is patched in version 0.0.4.
CVSS Score
8.3
EPSS Score
0.037
Published
2021-04-22