How severe is CVE-2023-28845?

CVE-2023-28845 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2023-28845 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28845?

CVE-2023-28845 affects Nextcloud Talk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28845?

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

When was CVE-2023-28845 published?

CVE-2023-28845 was published on 2023-03-31 and last updated on 2026-06-17.

CVE-2023-28845

CVE-2023-28845 is a low-severity vulnerability in Nextcloud Talk with a CVSS 3.x base score of 3.5. 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-284.

Key facts

Severity: Low (CVSS 3.x base score 3.5)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Nextcloud Talk
Published: 2023-03-31
Last modified: 2026-06-17

Description

Nextcloud talk is a video & audio conferencing app for Nextcloud. In affected versions the talk app does not properly filter access to a conversations member list. As a result an attacker could use this vulnerability to gain information about the members of a Talk conversation, even if they themselves are not members. It is recommended that the Nextcloud Talk is upgraded to 14.0.9 or 15.0.4. There are no known workarounds for this vulnerability.

Frequently asked questions

What is CVE-2023-28845?: Nextcloud talk is a video & audio conferencing app for Nextcloud. In affected versions the talk app does not properly filter access to a conversations member list. As a result an attacker could use this vulnerability to gain information about the members of a Talk conversation, even if they themselves are not members. It is recommended that the Nextcloud Talk is upgraded to 14.0.9 or 15.0.4. There are no known workarounds for this vulnerability.
How severe is CVE-2023-28845?: CVE-2023-28845 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2023-28845 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28845?: CVE-2023-28845 affects Nextcloud Talk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28845?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-28845 published?: CVE-2023-28845 was published on 2023-03-31 and last updated on 2026-06-17.

References

Affected products (1)

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

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-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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