How severe is CVE-2022-50943?

CVE-2022-50943 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2022-50943 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-50943?

CVE-2022-50943 affects Moodle. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-50943?

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

Does CVE-2022-50943 have an EU (EUVD) identifier?

Yes. CVE-2022-50943 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-55968.

When was CVE-2022-50943 published?

CVE-2022-50943 was published on 2026-05-10 and last updated on 2026-06-17.

CVE-2022-50943

CVE-2022-50943 is a medium-severity vulnerability in Moodle with a CVSS 3.x base score of 6.1. 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 6.1)
CVSS v4: 5.1
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2022-55968
Weakness: CWE-79
Affected product: Moodle
Published: 2026-05-10
Last modified: 2026-06-17

Description

Moodle LMS 4.0 contains a cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting payloads through the search parameter. Attackers can inject JavaScript code via the search field in course/search.php to execute arbitrary scripts in users' browsers and steal session cookies.

Frequently asked questions

What is CVE-2022-50943?: Moodle LMS 4.0 contains a cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting payloads through the search parameter. Attackers can inject JavaScript code via the search field in course/search.php to execute arbitrary scripts in users' browsers and steal session cookies.
How severe is CVE-2022-50943?: CVE-2022-50943 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2022-50943 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-50943?: CVE-2022-50943 affects Moodle. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-50943?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2022-50943 have an EU (EUVD) identifier?: Yes. CVE-2022-50943 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-55968.
When was CVE-2022-50943 published?: CVE-2022-50943 was published on 2026-05-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*

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