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Vulnerability record · CVE-2025-63950 · published 18 December 2025

CVE-2025-63950: Tomaszdunia twittodon deserialization of untrusted data vulnerability

TTomaszdunia · Twittodon

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.

7.5 CVSS 3.1 High EPSS 0.53% · top 57.4% CWE-502 · Deserialization of untrusted data
7.5CVSS 3.1 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/solonbarroso/vulnerability-research/blob/main/advisories/Twittodon/CVE-2025-63950.md ExploitThird Party Advisory
https://github.com/solonbarroso/vulnerability-research/blob/main/advisories/Twittodon/CVE-pending-Deserialization.md ExploitThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2025-63950), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.