Comment 1 for bug 408383

2009-07-21 PDF Editor 0.4.3
 * xpdf code base updated to 3.02pl3 patch which fixes
   several serious remote vulnerabilities
 * French translation update (bug 275)
 * Fix for [33853] Secunia advisory backported from poppler
 * Flattener class implemented (bt#289)
 * Bugs 248, 256, 285, 290, 291, 295, 299, 301, 304, 305, 306, 307, 309, 310, 314 fixed
 * Internal changes
  - all revisions are numbered in oposite direction (0 is
    always the oldest one) to enable stable numbering
  - changes are not discarded after we get to an older
    revision and back

Looking through the changelog it fixes security vulnerabilities