CVE-2026-2113
Published: 07 February 2026
Summary
CVE-2026-2113 is a medium-severity Improper Input Validation (CWE-20) vulnerability in Tpadmin Project Tpadmin. Its CVSS base score is 6.9 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 41.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SA-22 (Unsupported System Components) and SI-10 (Information Input Validation).
Deeper analysis
CVE-2026-2113 is a deserialization vulnerability in yuan1994 tpadmin versions up to 1.3.12. It affects an unknown part of the WebUploader component, specifically the library file /public/static/admin/lib/webuploader/0.1.5/server/preview.php. The issue is linked to CWE-20 (Improper Input Validation), CWE-502 (Deserialization of Untrusted Data), and CWE-434 (Unrestricted Upload of File with Dangerous Type), with a CVSS v3.1 base score of 7.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).
Remote attackers require no privileges or user interaction to exploit the vulnerability via network access. Successful exploitation leads to deserialization, enabling low-level impacts on confidentiality, integrity, and availability. An exploit has been publicly disclosed and may be used against affected instances.
The vulnerability only affects products no longer supported by the maintainer, implying no official patches are available. Relevant advisories and details are provided in references including a GitHub report on the remote code execution vulnerability in Tpadmin (https://github.com/sTy1H/CVE-Report/blob/main/Remote%20Code%20Execution%20Vulnerability%20in%20Tpadmin%20System.md) and VulDB entries (https://vuldb.com/?ctiid.344688, https://vuldb.com/?id.344688, https://vuldb.com/?submit.746795).
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-5715
Vulnerability details
A security vulnerability has been detected in yuan1994 tpadmin up to 1.3.12. This affects an unknown part in the library /public/static/admin/lib/webuploader/0.1.5/server/preview.php of the component WebUploader. The manipulation leads to deserialization. The attack is possible to be carried out remotely. The…
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exploit has been disclosed publicly and may be used. This vulnerability only affects products that are no longer supported by the maintainer.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Deserialization of untrusted data in a public-facing web component (preview.php) directly enables remote unauthenticated RCE against a web application.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires validation of all input before deserialization in preview.php, blocking the CWE-20/CWE-502 attack vector.
Deploys malicious-code detection mechanisms that can identify and block code executed via the deserialization payload.
Mandates replacement or compensating controls for the unsupported tpadmin component that has no vendor patches.