Updated htmldoc packages fix security vulnerabilities:
Integer overflow in the htmldoc 1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service that is similar to CVE-2017-9181 (CVE-2021-20308).
AddressSanitizer: double-free in function pspdf_export ps-pdf.cxx (CVE-2021-23158).
AddressSanitizer: heap-buffer-overflow in pspdfprepareoutpages() in ps-pdf.cxx (CVE-2021-23165).
AddressSanitizer: SEGV in file_extension file.c (CVE-2021-23180).
AddressSanitizer: SEGV on unknown address 0x000000000014 (CVE-2021-23191).
AddressSanitizer: stack-buffer-overflow in parse_table ps-pdf.cxx (CVE-2021-23206).
AddressSanitizer: heap-buffer-overflow in pspdfpreparepage(int) ps-pdf.cxx (CVE-2021-26252).
AddressSanitizer: heap-buffer-overflow on rendertablerow() ps-pdf.cxx (CVE-2021-26259).
SEGV on unknown address 0x000000000000 (CVE-2021-26948).