Description
An insecure deserialization vulnerability exists in the download.php script of the to3k Twittodon application through commit b1c58a7d1dc664b38deb486ca290779621342c0b (2023-02-28). The 'obj' parameter receives base64-encoded data that is passed directly to the unserialize() function without validation. This allows a remote, unauthenticated attacker to inject arbitrary PHP objects, leading to a denial of service.
Affected products
tomaszdunia: twittodon
References2
- github.com/solonbarroso/vulnerability-research/blob/main/adviso… ExploitThird Party Advisory
- github.com/solonbarroso/vulnerability-research/blob/main/adviso… ExploitThird Party Advisory
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 45 · as of 11 November 2026
- CWE
- CWE-502
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