How severe is CVE-2021-41180?

CVE-2021-41180 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-41180 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41180?

CVE-2021-41180 affects Nextcloud Talk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41180?

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

When was CVE-2021-41180 published?

CVE-2021-41180 was published on 2022-03-08 and last updated on 2026-06-17.

CVE-2021-41180

CVE-2021-41180 is a medium-severity vulnerability in Nextcloud Talk with a CVSS 3.x base score of 4.7. 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-601.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
CVSS v2: 4.0
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-601
Affected product: Nextcloud Talk
Published: 2022-03-08
Last modified: 2026-06-17

Description

Nextcloud talk is a self hosting messaging service. In versions prior 12.1.2 an attacker is able to control the link of a geolocation preview in the Nextcloud Talk application due to a lack of validation on the link. This could result in an open-redirect, but required user interaction. This only affected users of the Android Talk client. It is recommended that the Nextcloud Talk App is upgraded to 12.1.2. There are no known workarounds.

Frequently asked questions

What is CVE-2021-41180?: Nextcloud talk is a self hosting messaging service. In versions prior 12.1.2 an attacker is able to control the link of a geolocation preview in the Nextcloud Talk application due to a lack of validation on the link. This could result in an open-redirect, but required user interaction. This only affected users of the Android Talk client. It is recommended that the Nextcloud Talk App is upgraded to 12.1.2. There are no known workarounds.
How severe is CVE-2021-41180?: CVE-2021-41180 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-41180 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41180?: CVE-2021-41180 affects Nextcloud Talk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41180?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-41180 published?: CVE-2021-41180 was published on 2022-03-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nextcloud:talk:*:*:*:*:*:android:*:*

More vulnerabilities in Nextcloud Talk

CVE-2020-8180 — Critical (CVSS 9.9): A too lax check in Nextcloud Talk 6.0.4, 7.0.2 and 8.0.7 allowed a code injection when a not correctly sanitized talk…
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CVE-2023-39957 — High (CVSS 7.8): Nextcloud Talk Android allows users to place video and audio calls through Nextcloud on Android. Prior to version…
CVE-2021-32676 — Medium (CVSS 6.5): Nextcloud Talk is a fully on-premises audio/video and chat communication service. Password protected shared chats in…
CVE-2021-39222 — Medium (CVSS 6.4): Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud Talk application was vulnerable to a…
CVE-2018-3781 — Medium (CVSS 5.4): A missing sanitization of search results for an autocomplete field in NextCloud Talk <3.2.5 could lead to a stored XSS…

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Other CWE-601 (Open Redirect) vulnerabilities

CVE-2018-3774 — Critical (CVSS 10.0): Incorrect parsing in url-parse <1.4.3 returns wrong hostname which leads to multiple vulnerabilities such as SSRF, Open…
CVE-2019-25282 — Critical (CVSS 9.8): V-SOL GPON/EPON OLT Platform v2.03 contains an open redirect vulnerability in the script that allows attackers to…
CVE-2020-36912 — Critical (CVSS 9.8): Plexus anblick Digital Signage Management 3.1.13 contains an open redirect vulnerability in the 'PantallaLogin' script…
CVE-2025-43526 — Critical (CVSS 9.8): This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac…
CVE-2025-55031 — Critical (CVSS 9.8): Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An…
CVE-2024-22891 — Critical (CVSS 9.8): Nteract v.0.28.0 was discovered to contain a remote code execution (RCE) vulnerability via the Markdown link.

Browse all CWE-601 (Open Redirect) vulnerabilities →