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GHSA-p6fr-rxq7-xcg8

HighCVSS 7.5 / 10

Published May 11, 2026·Last modified May 11, 2026

Affected Components(0)

No affected components available

Description

Using show_inline=1 parameter and a valid file_show_inline_token CSRF token on file_download.php, an attacker can execute code by uploading a crafted XHTML attachment referencing a JavaScript attachment.

Impact

Cross-site scripting

Patches

26647b2e68ba30b9d7987d4e03d7a16416684bc2

Workarounds

None

Credits

Thanks to siunam (Tang Cheuk Hei) for discovering and responsibly reporting the issue.

Risk Scores

Base Score

7.5

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges.

Threat Intelligence

4.6

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS

0.35%

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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High severity

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