How severe is CVE-2018-20806?

CVE-2018-20806 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-2018-20806 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20806?

CVE-2018-20806 affects Phamm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20806?

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

When was CVE-2018-20806 published?

CVE-2018-20806 was published on 2019-03-17 and last updated on 2026-06-17.

CVE-2018-20806

CVE-2018-20806 is a medium-severity vulnerability in Phamm 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 v2: 4.3
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Phamm
Published: 2019-03-17
Last modified: 2026-06-17

Description

Phamm (aka PHP LDAP Virtual Hosting Manager) 0.6.8 allows XSS via the login page (the /public/main.php action parameter).

Frequently asked questions

What is CVE-2018-20806?: Phamm (aka PHP LDAP Virtual Hosting Manager) 0.6.8 allows XSS via the login page (the /public/main.php action parameter).
How severe is CVE-2018-20806?: CVE-2018-20806 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-2018-20806 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20806?: CVE-2018-20806 affects Phamm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20806?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-20806 published?: CVE-2018-20806 was published on 2019-03-17 and last updated on 2026-06-17.

References

https://github.com/lota/phamm/issues/24

Affected products (1)

cpe:2.3:a:phamm:phamm:0.6.8:*:*:*:*:*:*:*

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