How severe is CVE-2023-47107?

CVE-2023-47107 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-47107 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-47107?

CVE-2023-47107 affects Thm Pilos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-47107?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-47107 published?

CVE-2023-47107 was published on 2023-11-08 and last updated on 2026-06-17.

CVE-2023-47107

CVE-2023-47107 is a high-severity vulnerability in Thm Pilos with a CVSS 3.x base score of 8.8. 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-640.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-640
Affected product: Thm Pilos
Published: 2023-11-08
Last modified: 2026-06-17

Description

PILOS is an open source front-end for BigBlueButton servers with a built-in load balancer. The password reset component deployed within PILOS uses the hostname supplied within the request host header when building a password reset URL. It may be possible to manipulate the URL sent to PILOS users when so that it points to the attackers server thereby disclosing the password reset token if/when the link is followed. This only affects local user accounts and requires the password reset option to be enabled. This issue has been patched in version 2.3.0.

Frequently asked questions

What is CVE-2023-47107?: PILOS is an open source front-end for BigBlueButton servers with a built-in load balancer. The password reset component deployed within PILOS uses the hostname supplied within the request host header when building a password reset URL. It may be possible to manipulate the URL sent to PILOS users when so that it points to the attackers server thereby disclosing the password reset token if/when the link is followed. This only affects local user accounts and requires the password reset option to be enabled. This issue has been patched in version 2.3.0.
How severe is CVE-2023-47107?: CVE-2023-47107 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-47107 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-47107?: CVE-2023-47107 affects Thm Pilos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-47107?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-47107 published?: CVE-2023-47107 was published on 2023-11-08 and last updated on 2026-06-17.

References

https://github.com/THM-Health/PILOS/security/advisories/GHSA-mc6f-fj9h-5735

Affected products (1)

cpe:2.3:a:thm:pilos:*:*:*:*:*:*:*:*

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