What is CVE-2021-47208?

CVE-2021-47208 is a medium-severity vulnerability in Mojolicious, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2024-04-08.

How severe is CVE-2021-47208?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Resource exhaustion in Mojolicious

CVE-2021-47208

The Mojolicious module before 9.11 for Perl has a bug in format detection that can potentially be exploited for denial of service.

Vulnerability class: DoS (Denial of Service)

Published 2024-04-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.006 (44.2th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.000

Affected products

Mojolicious

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

github.com/mojolicious/mojo/issues/1736 (Exploit, Issue Tracking)
github.com/mojolicious/mojo/commit/a0c4576ffb11c235088550de9ba7ac4196e1953c (Patch)

Frequently asked questions

What is CVE-2021-47208?: CVE-2021-47208 is a medium-severity vulnerability in Mojolicious, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2024-04-08.
How severe is CVE-2021-47208?: Medium severity. CVSS v3 base score is 4.3 out of 10.