How severe is CVE-2021-41826?

CVE-2021-41826 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-2021-41826 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41826?

CVE-2021-41826 affects Place Placeos Authentication. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41826?

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

When was CVE-2021-41826 published?

CVE-2021-41826 was published on 2021-09-30 and last updated on 2026-06-17.

CVE-2021-41826

CVE-2021-41826 is a medium-severity vulnerability in Place Placeos Authentication with a CVSS 3.x base score of 6.1. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-601.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 5.8
EPSS exploit prediction: 12% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-601
Affected product: Place Placeos Authentication
Published: 2021-09-30
Last modified: 2026-06-17

Description

PlaceOS Authentication Service before 1.29.10.0 allows app/controllers/auth/sessions_controller.rb open redirect.

Frequently asked questions

What is CVE-2021-41826?: PlaceOS Authentication Service before 1.29.10.0 allows app/controllers/auth/sessions_controller.rb open redirect.
How severe is CVE-2021-41826?: CVE-2021-41826 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-2021-41826 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41826?: CVE-2021-41826 affects Place Placeos Authentication. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41826?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-41826 published?: CVE-2021-41826 was published on 2021-09-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:place:placeos_authentication:*:*:*:*:*:*:*:*

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