HTMLDOC v1.9.18 contains a buffer overflow in parse_pre function,ps-pdf.cxx:5681.

published 2024-10-24 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-41855

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits: 0; none known

Patch / fix

distros 3 links 1

debian ubuntu opensuse

htmldoc Debian 14, Debian 13 1.9.18-3

debian advisories DEBIAN-CVE-2024-46478

htmldoc Ubuntu Pro 14.04 LTS 1.8.27-8ubuntu1+esm4
htmldoc Ubuntu Pro 16.04 LTS 1.8.27-8ubuntu1.1+esm3
htmldoc Ubuntu Pro 18.04 LTS 1.9.2-1ubuntu0.2+esm2
htmldoc Ubuntu Pro 20.04 LTS 1.9.7-1ubuntu0.3+esm2
htmldoc Ubuntu Pro 22.04 LTS 1.9.15-1ubuntu0.1~esm1
htmldoc Ubuntu Pro 24.04 LTS 1.9.17-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2024-46478

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 openSUSE Leap 16.0 1.9.23-bp160.1.1
htmldoc Package Hub 15 SP5, openSUSE Leap 15.5 1.9.16-bp155.2.6.1
htmldoc openSUSE Tumbleweed 1.9.18-3.1

opensuse advisories openSUSE-SU-2026:20219-1 openSUSE-SU-2024:0349-1 openSUSE-SU-2024:14460-1

github.com/michaelrsweet/htmldoc@683bec5 commit

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: total
Assessed: 2 y ago (2024-10-25)

Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/michaelrsweet/htmldoc/issues/529 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

htmldoc_project htmldoc

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input

References

github.com /michaelrsweet/htmldoc/commit/683bec548e642cf4a17e003fb34f6bbaf2d27b98
patch
github.com /michaelrsweet/htmldoc/issues/529
exploit, issue-tracking, third-party-advisory

Sources

CVE List CVE-2024-46478
NVD CVE-2024-46478

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.

Summary