What is CVE-2022-30351?

CVE-2022-30351 is a high-severity vulnerability in Pdfzorro, classified under Improper Encoding or Escaping of Output. CVSS score: 7.5/10. Published 2023-03-30.

How severe is CVE-2022-30351?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Pdfzorro

CVE-2022-30351

PDFZorro PDFZorro Online r20220428 using TCPDF 6.2.5, despite having workflows claiming to correctly remove redacted information from a supplied PDF file, does not properly sanitize this information in all cases, causing redacted information, including images and text embedded in the PDF file, to be leaked unintentionally. In cases where PDF text objects are present it is possible to copy-paste redacted information into the system clipboard. Once a document is "locked" and marked for redaction once, all redactions performed after this feature is triggered are vulnerable.

Published 2023-03-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (44.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

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

Affected products

Pdfzorro — versions r20220428

Weakness classification (CWE)

References

www.pdfzorro.com/pdf-edit/ (Product)
arxiv.org/pdf/2206.02285.pdf (Third Party Advisory)

Frequently asked questions

What is CVE-2022-30351?: CVE-2022-30351 is a high-severity vulnerability in Pdfzorro, classified under Improper Encoding or Escaping of Output. CVSS score: 7.5/10. Published 2023-03-30.
How severe is CVE-2022-30351?: High severity. CVSS v3 base score is 7.5 out of 10.