Skip to content
Fencer Vulns
high 7.8

CVE-2019-19630 json

HTMLDOC 1.9.7 allows a stack-based buffer overflow in the hd_strlcpy() function in string.c (when called from render_contents in ps-pdf.cxx…

published 2019-12-08 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-9241

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

HTMLDOC 1.9.7 allows a stack-based buffer overflow in the hd_strlcpy() function in string.c (when called from render_contents in ps-pdf.cxx) via a crafted HTML document.

Patch / fix

  • htmldoc Debian 14, Debian 13, Debian 12 1.9.7-1

debian advisories DEBIAN-CVE-2019-19630

  • htmldoc Ubuntu 16.04 LTS 1.8.27-8ubuntu1.1
  • htmldoc Ubuntu 18.04 LTS 1.9.2-1ubuntu0.1
  • htmldoc Ubuntu Pro 14.04 LTS 1.8.27-8ubuntu1+esm1

ubuntu advisories UBUNTU-CVE-2019-19630

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • htmldoc Subscription Management Tool 11 SP3 1.8.27-170.4.9.1

suse advisories SUSE-SU-2022:14898-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-19630 updated cvss 7.8

htmldoc: crafted HTML document allows for a stack-based buffer overflow in the hd_strlcpy() function in string.c

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.14% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/michaelrsweet/htmldoc/issues/370 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.