What is CVE-2020-19463?

CVE-2020-19463 is a medium-severity vulnerability in Flowpaper Pdf2json, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.5/10. Published 2021-07-21.

How severe is CVE-2020-19463?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2020-19463 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in Flowpaper Pdf2json

CVE-2020-19463

An issue has been found in function vfprintf in PDF2JSON 0.70 that allows attackers to cause a Denial of Service due to a stack overflow.

Published 2021-07-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (53.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Flowpaper Pdf2json — versions 0.70

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

Public proof-of-concept exploits

Live-Hack-CVE/CVE-2020-19463

References

github.com/flexpaper/pdf2json/issues/24 (Exploit, Third Party Advisory, Issue Tracking)
cwe.mitre.org/data/definitions/770.html (Third Party Advisory)

Frequently asked questions

What is CVE-2020-19463?: CVE-2020-19463 is a medium-severity vulnerability in Flowpaper Pdf2json, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.5/10. Published 2021-07-21.
How severe is CVE-2020-19463?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2020-19463 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.