How severe is CVE-2018-1043?

CVE-2018-1043 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2018-1043 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1043?

CVE-2018-1043 primarily affects Moodle. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-1043?

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

When was CVE-2018-1043 published?

CVE-2018-1043 was published on 2018-01-22 and last updated on 2026-06-17.

CVE-2018-1043

CVE-2018-1043 is a medium-severity vulnerability in Moodle with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Moodle
Published: 2018-01-22
Last modified: 2026-06-17

Description

In Moodle 3.x, the setting for blocked hosts list can be bypassed with multiple A record hostnames.

Frequently asked questions

What is CVE-2018-1043?: In Moodle 3.x, the setting for blocked hosts list can be bypassed with multiple A record hostnames.
How severe is CVE-2018-1043?: CVE-2018-1043 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2018-1043 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1043?: CVE-2018-1043 primarily affects Moodle. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-1043?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1043 published?: CVE-2018-1043 was published on 2018-01-22 and last updated on 2026-06-17.

References

Affected products (12)

cpe:2.3:a:moodle:moodle:3.2.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.2.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.2.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.2.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.2.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.2.5:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.2.6:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.3.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.3.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.3.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.3.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.4.0:*:*:*:*:*:*:*

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