What is CVE-2023-36307?

CVE-2023-36307 is a medium-severity vulnerability in Simonwaldherr Zplgfa, classified under Improper Validation of Array Index. CVSS score: 5.5/10. Published 2023-09-05.

How severe is CVE-2023-36307?

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

Vulnerability in Simonwaldherr Zplgfa

CVE-2023-36307

ZPLGFA 1.1.1 allows attackers to cause a panic (because of an integer index out of range during a ConvertToGraphicField call) via an image of zero width. NOTE: it is unclear whether there are common use cases in which this panic could have any security consequence

Published 2023-09-05 · 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: 0.003 (16.3th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000

Affected products

Simonwaldherr Zplgfa — versions 1.1.1

Weakness classification (CWE)

CWE-129 — Improper Validation of Array Index

References

github.com/SimonWaldherr/zplgfa/pull/6 (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2023-36307?: CVE-2023-36307 is a medium-severity vulnerability in Simonwaldherr Zplgfa, classified under Improper Validation of Array Index. CVSS score: 5.5/10. Published 2023-09-05.
How severe is CVE-2023-36307?: Medium severity. CVSS v3 base score is 5.5 out of 10.