CVE-2022-40778: A stored Cross-Site Scripting (XSS) vulnerability in OPSWAT MetaDefender ICAP Server before 4.13.0 allows atta

Q: How do I fix CVE-2022-40778?

metadefender: upgrade to 4.13.0. Exact commands for each OS are on this page.

Q: Is CVE-2022-40778 being exploited?

CVE-2022-40778 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-40778 affect?

CVE-2022-40778 affects metadefender. Severity is medium (CVSS 5.4). A stored Cross-Site Scripting (XSS) vulnerability in OPSWAT MetaDefender ICAP Server before 4.13.0 allows attackers to execute arbitrary JavaScript or HTML because of the blocked page response.

Q: How urgent is CVE-2022-40778?

Priority 29/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2022-40778 is a medium-severity flaw (CVSS 5.4) affecting metadefender. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A stored Cross-Site Scripting (XSS) vulnerability in OPSWAT MetaDefender ICAP Server before 4.13.0 allows attackers to execute arbitrary JavaScript or HTML because of the blocked page response.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.5% (top 58%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-09-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: opswat

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

Am I affected?

Timeline

2022-09-19 07:15 UTCPublished CVE record published
2026-06-17 05:02 UTCUpdated Record last modified

opswat metadefender UPGRADE

Affected: < 4.13.0

Fixed in: 4.13.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 4.13.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade metadefender

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade metadefender

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2022-40778?

metadefender: upgrade to 4.13.0. Exact commands for each OS are on this page.

Is CVE-2022-40778 being exploited?

CVE-2022-40778 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-2022-40778 affect?

CVE-2022-40778 affects metadefender. Severity is medium (CVSS 5.4). A stored Cross-Site Scripting (XSS) vulnerability in OPSWAT MetaDefender ICAP Server before 4.13.0 allows attackers to execute arbitrary JavaScript or HTML because of the blocked page response.

How urgent is CVE-2022-40778?

Priority 29/100. No elevated risk signals yet.

Related CVEs

CVE-2022-32273 MEDIUM 4.3 UPGRADE As a result of an observable discrepancy in returned messages, OPSWAT MetaDefender Core (MDCore) before 5.1.2
CVE-2022-32272 CRITICAL 9.8 UPGRADE OPSWAT MetaDefender Core before 5.1.2, MetaDefender ICAP before 4.12.1, and MetaDefender Email Gateway Securit

References

← Back to latest CVEs