HTML / XML / JS, low-level validity (cross-cutting)MediumInferred
Encoding mismatch
What it is
Declared charset ≠ actual.
Why it matters
Garbled text; parsing issues.
How to fix it
Serve and declare UTF-8 consistently.
Impact
Low-medium. Inferred.
Evidence
Correct encoding supports parsing. Google Search Central, In-Depth Guide to How Google Search Works