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GHSA-52mq-6jcv-j79x

LowCVSS 2.6 / 10
Published Mar 3, 2021·Last modified Mar 13, 2026
Affected Components(0)

No affected components available

Description

Impact

The user content sandbox can be abused to trick users into opening unexpected documents after several user interactions. The content can be opened with a blob origin from the Matrix client, so it is possible for a malicious document to access user messages and secrets.

Patches

This has been fixed by https://github.com/matrix-org/matrix-react-sdk/pull/5657, which is included in 3.15.0.

Workarounds

There are no known workarounds.

Risk Scores
Base Score
2.6

The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a low impact on the integrity of the data.

Threat Intelligence
2.4

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
0.92%

The exploit probability is very low. The vulnerability is unlikely to be exploited in 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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