CVE-2022-24887Public exploitNetwork attack vector

User redirection via unvalidated Deck metadata URL

Published Apr 27, 2022 · Updated Apr 22, 2025

Open redirect in Nextcloud Talk before 11.3.4, 12.2.2, and 13.0.0 allows remote authenticated users to send arbitrary links. The Deck-card rich-object metadata path accepts a client-controlled URL and renders it as the card link without restricting it to trusted domains. A sender must be able to share a Deck card in a conversation, and a recipient must open the link to be redirected to an attacker-chosen site.

CVSS severity4.3
Medium
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in Nextcloud Talk before 11.3.4, 12.2.2, and 13.0.0 allows remote authenticated users to send arbitrary links. The Deck-card rich-object metadata path accepts a client-controlled URL and renders it as the card link without restricting it to trusted domains. A sender must be able to share a Deck card in a conversation, and a recipient must open the link to be redirected to an attacker-chosen site.

The record

CVE
CVE-2022-24887
Published
Apr 27, 2022
Updated
Apr 22, 2025
Vendor
Nextcloud GmbH
Product
Security Advisories
Classifications
CWE-601, T1204.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 11.3.4
  2. Affected versionversion=< 12.2.2
  3. Affected versionversion=< 13.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Nextcloud GmbH · Security Advisoriesversion=< 11.3.4; version=< 12.2.2; version=< 13.0.0

Published CVSS scores

4.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1204.001User Execution: Malicious Link

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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