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GHSA-vf5j-r2hw-2hrw

HighCVSS 8.2 / 10
Published Feb 5, 2026·Last modified Feb 19, 2026
Affected Components(0)

No affected components available

Description

Impact

A security issue was discovered in Reva that enables a malicious user to bypass the scope validation of a public link. That allows it to access resources outside the scope of a public link.

OpenCloud uses Reva as one of its core components and thus it is affected.

Patches

Update to OpenCloud version >= 4.0.3 (stable release) Update to OpenCloud version >= 5.0.2 (rolling release)

Workarounds

If projects are unable to update immediately, please implement the following security configuration to disable public link shares temporarily until the final solution for this problem is rolled out.

Configuration Adjustment

  • Docker Compose: Edit the docker-compose.yml and add GATEWAY_STORAGE_PUBLIC_LINK_ENDPOINT=“” (empty string value) in the environment section of the opencloud container.

Verification of Mitigation

Execute the following test:

  • Create a public link for testing.
  • Open the link url in a private (no active login) browser tab.
  • An error page with “unknown error” will be displayed.

This configuration provides immediate protection and should be implemented immediately. Configuration mitigation is available. It mitigates the problem completely.

For more information

If there are questions or comments about this advisory:

Risk Scores
Base Score
8.2

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a low impact on the integrity of the data.

Threat Intelligence
7.5

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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High severity
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