CVE-2022-29623: An arbitrary file upload vulnerability in the file upload module of Express Connect-Multiparty 2.2.0 allows at

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HIGH 7.8DOWNGRADE

CVE-2022-29623 is a high-severity flaw (CVSS 7.8) affecting connect-multiparty. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An arbitrary file upload vulnerability in the file upload module of Express Connect-Multiparty 2.2.0 allows attackers to execute arbitrary code via a crafted PDF file. NOTE: the Supplier has not verified this vulnerability report.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-434
Published	2022-05-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: connect-multiparty project

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

Am I affected?

Timeline

2022-05-16 14:15 UTCPublished CVE record published
2026-06-17 04:40 UTCUpdated Record last modified

connect-multiparty project connect-multiparty DOWNGRADE

Affected: 2.2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.2.0

1. Check installed version

apt-cache policy connect-multiparty || rpm -q connect-multiparty || connect-multiparty --version

2. No fixed release: DOWNGRADE to a release before 2.2.0 (Debian / Ubuntu)

apt-cache madison connect-multiparty sudo apt install connect-multiparty=<VERSION_BEFORE_2.2.0> sudo apt-mark hold connect-multiparty

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

dnf --showduplicates list connect-multiparty sudo dnf downgrade connect-multiparty-<VERSION_BEFORE_2.2.0> sudo dnf versionlock add connect-multiparty

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-2022-29623?

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

Is CVE-2022-29623 being exploited?

CVE-2022-29623 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-2022-29623 affect?

CVE-2022-29623 affects connect-multiparty. Severity is high (CVSS 7.8). An arbitrary file upload vulnerability in the file upload module of Express Connect-Multiparty 2.2.0 allows attackers to execute arbitrary code via a crafted PDF file. NOTE: the Supplier has not verified this vulnerability report.

How urgent is CVE-2022-29623?

Priority 50/100. High severity; Public exploit reference

References

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