Deserialization in Tastyigniter
CVE-2026-29001
TastyIgniter through 4.4.5 contain a PHP object injection vulnerability that allows authenticated administrators to achieve arbitrary code execution by submitting a serialized PHP object as a settings value, which is stored unsanitized and later unserialized by getValueAttribute() when the setting is read. Attackers can submit a serialized gadget chain, such as one generated via phpggc, through the admin settings form (for example the maintenance_message setting loaded by CheckMaintenance.php) to achieve arbitrary operating-system command execution as the PHP application process user, with the impact persisting until the value is overwritten.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/tastyigniter/TastyIgniter/issues/1205 (technical-description)
- www.vulncheck.com/advisories/tastyigniter-php-object-injection-via-settings-des… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-29001?
- CVE-2026-29001 is a high-severity vulnerability in Tastyigniter, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2026-10-21.
- How severe is CVE-2026-29001?
- High severity. CVSS v3 base score is 7.2 out of 10.