Vulnerability · Published Oct 20, 2025 · Assigned by wikimedia-foundation
CVE-2025-62697Improperly sanitized style parameter in LanguageSelector
High 8.8
In plain English
A high-severity injection in Mediawiki - LanguageSelector Extension from The Wikimedia Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Severity (CVSS 4.0)8.8High
Exploit odds (30 days)0.3%top 71.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in The Wikimedia Foundation Mediawiki - LanguageSelector Extension allows Code Injection.This issue affects Mediawiki - LanguageSelector Extension: from master before 1.39.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:25.10 | mediawiki | no fix listed | UBUNTU-CVE-2025-62697 |
| Ubuntu:26.04:LTS | mediawiki | no fix listed | UBUNTU-CVE-2025-62697 |
| Ubuntu:26.10 | mediawiki | no fix listed | UBUNTU-CVE-2025-62697 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The Wikimedia Foundation | Mediawiki - LanguageSelector Extension | master – before 1.39 |
Weakness: CWE-74 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:L/SI:L/SA:L