Vulnerability · Published Jun 30, 2023 · Assigned by mitre
CVE-2023-37303
Critical 9.8
In plain English
A critical-severity security flaw in the mediawiki package (Ubuntu). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 61% of all known vulnerabilities).
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)1.0%top 38.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. In certain situations, an attempt to block a user fails after a temporary browser hang and a DBQueryDisconnectedError error message.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:25.10 | mediawiki | no fix listed | UBUNTU-CVE-2023-37303 |
| Ubuntu:26.04:LTS | mediawiki | no fix listed | UBUNTU-CVE-2023-37303 |
| Ubuntu:26.10 | mediawiki | no fix listed | UBUNTU-CVE-2023-37303 |
Affected products (as reported)
Weakness: CWE-754