How severe is CVE-2022-40778?

CVE-2022-40778 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2022-40778 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-40778?

CVE-2022-40778 affects Opswat Metadefender. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-40778?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-40778 published?

CVE-2022-40778 was published on 2022-09-19 and last updated on 2026-06-17.

CVE-2022-40778

CVE-2022-40778 is a medium-severity vulnerability in Opswat Metadefender with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Opswat Metadefender
Published: 2022-09-19
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2022-40778?: 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 severe is CVE-2022-40778?: CVE-2022-40778 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2022-40778 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-40778?: CVE-2022-40778 affects Opswat Metadefender. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-40778?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-40778 published?: CVE-2022-40778 was published on 2022-09-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:opswat:metadefender:*:*:*:*:*:*:*:*

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