What is CVE-2021-26948?

CVE-2021-26948 is a high-severity vulnerability in Htmldoc Project, classified under CWE-479. CVSS score: 7.8/10. Published 2022-03-03.

How severe is CVE-2021-26948?

High severity. CVSS v3 base score is 7.8 out of 10.

NULL pointer dereference in Htmldoc Project

CVE-2021-26948

Null pointer dereference in the htmldoc v1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service via a crafted html file.

Published 2022-03-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (56.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Htmldoc Project — versions 1.9.11
Htmldoc — versions v1.9.11

Weakness classification (CWE)

References

github.com/michaelrsweet/htmldoc/issues/410 (Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-26948?: CVE-2021-26948 is a high-severity vulnerability in Htmldoc Project, classified under CWE-479. CVSS score: 7.8/10. Published 2022-03-03.
How severe is CVE-2021-26948?: High severity. CVSS v3 base score is 7.8 out of 10.