Tim paste

Normal

Unable to compile LilyPond input file:

Multipage

Unable to compile LilyPond input file:

Raw

Unable to compile LilyPond input file:

Starling

Unable to compile LilyPond input file:

Rest

Unable to compile LilyPond input file:

ABC

Unable to compile LilyPond input file:

CVE-2020-17354

See T259210; unable to reproduce with LilyPond 2.23.82, MediaWiki REL1_39, Score on master.

1. PoC from task:

Unable to compile LilyPond input file:

line 6 - column 1:
Spurious expression in \score

2. Again, using raw=1:

Unable to compile LilyPond input file:

3. Notehead stencil hack PoC, contributed in comment from LilyPond developer Han-wen Nienhuys:

Unable to compile LilyPond input file: