CVE-2022-30351: PDFZorro PDFZorro Online r20220428 using TCPDF 6.2.5, despite having workflows claiming to correctly remove re

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HIGH 7.5REMOTEDOWNGRADE

CVE-2022-30351 is a high-severity flaw (CVSS 7.5) affecting pdfzorro. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-116, CWE-1116
Published	2023-03-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pdfzorro

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-03-30 16:15 UTCPublished CVE record published
2026-06-17 04:43 UTCUpdated Record last modified

pdfzorro pdfzorro DOWNGRADE

Affected: r20220428

Fixed in: no fixed release known

Safe to downgrade to: a release before r20220428

1. Check installed version

apt-cache policy pdfzorro || rpm -q pdfzorro || pdfzorro --version

2. No fixed release: DOWNGRADE to a release before r20220428 (Debian / Ubuntu)

apt-cache madison pdfzorro sudo apt install pdfzorro=<VERSION_BEFORE_r20220428> sudo apt-mark hold pdfzorro

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list pdfzorro sudo dnf downgrade pdfzorro-<VERSION_BEFORE_r20220428> sudo dnf versionlock add pdfzorro

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-30351?

pdfzorro: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-30351 being exploited?

CVE-2022-30351 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-30351 affect?

CVE-2022-30351 affects pdfzorro. Severity is high (CVSS 7.5). 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 informatio

How urgent is CVE-2022-30351?

Priority 43/100. High severity; Remotely exploitable, no login, no user action

References

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