What is CVE-2023-6299?

CVE-2023-6299 is a medium-severity vulnerability in Apryse Itext, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 4.3/10. Published 2023-11-26.

How severe is CVE-2023-6299?

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

Is CVE-2023-6299 known to be exploited?

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

Vulnerability in Apryse Itext

CVE-2023-6299

A vulnerability, which was classified as problematic, has been found in Apryse iText 8.0.1. This issue affects some unknown processing of the file PdfDocument.java of the component Reference Table Handler. The manipulation leads to memory leak. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 8.0.2 is able to address this issue. It is recommended to upgrade the affected component. The identifier VDB-246125 was assigned to this vulnerability. NOTE: The vendor was contacted early about this vulnerability. The fix was introduced in the iText 8.0.2 release on October 25th 2023, prior to the disclosure.

Published 2023-11-26 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.009 (59.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Apryse Itext — versions 8.0.1
Itextpdf Itext — versions 8.0.1

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

Public proof-of-concept exploits

pdfpass/PDFPass

References

vuldb.com/ (Third Party Advisory, vdb-entry)
vuldb.com/ (signature, permissions-required, Third Party Advisory)
drive.google.com/file/d/1_jeD7SvuliKc_02pPTPbfSnqAErzmFny/view (exploit, Broken Link)
kb.itextpdf.com/home/it7kb/releases/release-itext-core-8-0-2 (Release Notes, patch)

Frequently asked questions

What is CVE-2023-6299?: CVE-2023-6299 is a medium-severity vulnerability in Apryse Itext, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 4.3/10. Published 2023-11-26.
How severe is CVE-2023-6299?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2023-6299 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.