What is CVE-2023-31194?

CVE-2023-31194 is a medium-severity vulnerability in Diagon, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2023-07-05.

How severe is CVE-2023-31194?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Buffer overflow in Diagon

CVE-2023-31194

An improper array index validation vulnerability exists in the GraphPlanar::Write functionality of Diagon v1.0.139. A specially crafted markdown file can lead to memory corruption. A victim would need to open a malicious file to trigger this vulnerability.

Vulnerability class: Buffer Overflow

Published 2023-07-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.004 (36.4th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Diagon — versions v1.0.139
Diagon Project — versions 1.0.139

Weakness classification (CWE)

References

talosintelligence.com/vulnerability_reports/TALOS-2023-1745 (Exploit, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2023-31194?: CVE-2023-31194 is a medium-severity vulnerability in Diagon, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2023-07-05.
How severe is CVE-2023-31194?: Medium severity. CVSS v3 base score is 5.3 out of 10.