CVE-2021-41867

CVE-2021-41867 is a medium-severity vulnerability in Onionshare with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

An information disclosure vulnerability in OnionShare 2.3 before 2.4 allows remote unauthenticated attackers to retrieve the full list of participants of a non-public OnionShare node via the --chat feature.

Frequently asked questions

What is CVE-2021-41867?
An information disclosure vulnerability in OnionShare 2.3 before 2.4 allows remote unauthenticated attackers to retrieve the full list of participants of a non-public OnionShare node via the --chat feature.
How severe is CVE-2021-41867?
CVE-2021-41867 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-41867 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41867?
CVE-2021-41867 affects Onionshare. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41867?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-41867 published?
CVE-2021-41867 was published on 2021-10-04 and last updated on 2026-06-17.

References

Affected products (1)

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