CVE-2024-45508: HTMLDOC before 1.9.19 has an out-of-bounds write in parse_paragraph in ps-pdf.cxx because of an attempt to str

Q: How do I fix CVE-2024-45508?

htmldoc: upgrade to 1.9.19. Exact commands for each OS are on this page.

Q: Is CVE-2024-45508 being exploited?

CVE-2024-45508 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-45508 affect?

CVE-2024-45508 affects htmldoc. Severity is critical (CVSS 9.8). HTMLDOC before 1.9.19 has an out-of-bounds write in parse_paragraph in ps-pdf.cxx because of an attempt to strip leading whitespace from a whitespace-only node.

Q: How urgent is CVE-2024-45508?

Priority 58/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2024-45508 is a critical-severity flaw (CVSS 9.8) affecting htmldoc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

HTMLDOC before 1.9.19 has an out-of-bounds write in parse_paragraph in ps-pdf.cxx because of an attempt to strip leading whitespace from a whitespace-only node.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-787
Published	2024-09-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: htmldoc project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-09-01 22:15 UTCPublished CVE record published
2026-06-17 07:54 UTCUpdated Record last modified

htmldoc project htmldoc UPGRADE

Affected: < 1.9.19

Fixed in: 1.9.19

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy htmldoc || rpm -q htmldoc || htmldoc --version

2. UPGRADE to 1.9.19 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade htmldoc

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade htmldoc

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-45508?

htmldoc: upgrade to 1.9.19. Exact commands for each OS are on this page.

Is CVE-2024-45508 being exploited?

CVE-2024-45508 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-45508 affect?

CVE-2024-45508 affects htmldoc. Severity is critical (CVSS 9.8). HTMLDOC before 1.9.19 has an out-of-bounds write in parse_paragraph in ps-pdf.cxx because of an attempt to strip leading whitespace from a whitespace-only node.

How urgent is CVE-2024-45508?

Priority 58/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-46478 CRITICAL 9.8 DOWNGRADE HTMLDOC v1.9.18 contains a buffer overflow in parse_pre function,ps-pdf.cxx:5681.

References

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