+MASVS-CODE Code Quality
---+MASVS-CODE-1 The app requires an up-to-date platform version.
---+MASVS-CODE-2 The app has a mechanism for enforcing app updates.
---+MASVS-CODE-3 The app only uses software components without known vulnerabilities.
---+MASVS-CODE-4 The app validates and sanitizes all untrusted inputs.

MASVS-CODE Code Quality

Mobile apps have many data entry points, including the UI, IPC, network, and file system, which might receive data that has been inadvertently modified by untrusted actors. By treating this data as untrusted input and properly verifying and sanitizing it before use, developers can prevent classical injection attacks, such as SQL injection, XSS, or insecure deserialization. However, other common coding vulnerabilities, such as memory corruption flaws, are hard to detect in penetration testing but easy to prevent with secure architecture and coding practices. Developers should follow best practices such as the OWASP Software Assurance Maturity Model (SAMM) and NIST.SP.800-218 Secure Software Development Framework (SSDF) to avoid introducing these flaws in the first place.

This category covers coding vulnerabilities that arise from external sources such as app data entry points, the OS, and third-party software components. Developers should verify and sanitize all incoming data to prevent injection attacks and bypass of security checks. They should also enforce app updates and ensure that the app runs up-to-date platforms to protect users from known vulnerabilities.

1. Yleiskatsaus

Otsikko	Standardi
MASVS-CODE-1 The app requires an up-to-date platform version.	The app requires an up-to-date platform version. Every release of the mobile OS includes security patches and new security features. By supporting older versions, apps stay vulnerable to well-known threats. This control ensures that the app is running on an up-to-date platform version so that users have the latest security protections.
MASVS-CODE-2 The app has a mechanism for enforcing app updates.	The app has a mechanism for enforcing app updates. Sometimes critical vulnerabilities are discovered in the app when it is already in production. This control ensures that there is a mechanism to force the users to update the app before they can continue using it.
MASVS-CODE-3 The app only uses software components without known vulnerabilities.	The app only uses software components without known vulnerabilities. To be truly secure, a full whitebox assessment should have been performed on all app components. However, as it usually happens with e.g. for third-party components this is not always feasible and not typically part of a penetration test. This control covers "low-hanging fruit" cases, such as those that can be detected just by scanning libraries for known vulnerabilities.
MASVS-CODE-4 The app validates and sanitizes all untrusted inputs.	The app validates and sanitizes all untrusted inputs. Apps have many data entry points including the UI, IPC, the network, the file system, etc. This incoming data might have been inadvertently modified by untrusted actors and may lead to bypass of critical security checks as well as classical injection attacks such as SQL injection, XSS or insecure deserialization. This control ensures that this data is treated as untrusted input and is properly verified and sanitized before it's used.

1.1 Viittaukset

1.2 Tunnistetut vaatimukset

1.3 Liittyvät säädökset

2. Tunnistetut vaatimukset

Vaatimukset
Lähde	Vaatimus

3. Liittyvät säädökset

Säädökset
Lähde	Sääntely

OWASP -
EN: Publications of the OWASP Foundation, https://owasp.org/. OWASP® is a registered trademark of the OWASP Foundation, Inc.; GRCA is not affiliated with, nor endorsed by, the OWASP Foundation. Only the versions published by OWASP are authoritative.
- OWASP Application Security Verification Standard (ASVS) 5.0.0, May 2025, from OWASP/ASVS: © 2008-2025 The OWASP Foundation, licensed under CC BY-SA 4.0. Changes: divided into sections and converted into the GRCA format, the wording unchanged. These adaptations are shared under CC BY-SA 4.0 as well.
- OWASP Mobile Application Security Verification Standard (MASVS) v2.1.0, January 2024, from OWASP/masvs: © The OWASP Foundation, licensed under CC BY-SA 4.0. Changes: converted into the GRCA format, the wording unchanged. These adaptations are shared under CC BY-SA 4.0 as well.
- OWASP Mobile Application Security Weakness Enumeration (MASWE) v1.0.0, August 2026, from OWASP/maswe: © The OWASP Foundation, licensed under CC BY-SA 4.0. Changes: converted into the GRCA format, the wording unchanged, linked to the MASVS controls they map to. These adaptations are shared under CC BY-SA 4.0 as well.
- OWASP Mobile Application Security Testing Guide (MASTG) v2.0.0, June 2026, from OWASP/mastg: © The OWASP Foundation, licensed under CC BY-SA 4.0. The tests and best practices only, without code samples, images, tools or apps. Changes: converted into the GRCA format, the wording unchanged; references to other pages of the MASTG as links to mas.owasp.org; the weakness of each test in the numbering of MASWE v1 and linked to it. These adaptations are shared under CC BY-SA 4.0 as well.
- OWASP Software Assurance Maturity Model (SAMM) v2.2.0, July 2026, from owaspsamm/core: © The OWASP Foundation, licensed under CC BY-SA 4.0. Changes: converted into the GRCA format, the wording unchanged; short codes (G-SM-1-A) built from the model, the assessment questions as assessment procedures of their activities. These adaptations are shared under CC BY-SA 4.0 as well.
- OWASP Top 10:2025, from OWASP/Top10: © 2003-2025 The OWASP® Foundation, Inc., licensed under CC BY-SA 4.0. The ten categories, without the icons. Changes: converted into the GRCA format, the wording unchanged. These adaptations are shared under CC BY-SA 4.0 as well. The names of the mapped CWEs (Common Weakness Enumeration): © 2006–2026 The MITRE Corporation. License: The MITRE Corporation hereby grants you a non-exclusive, royalty-free license to use CWE for research, development, and commercial purposes. Any copy you make for such purposes is authorized on the condition that you reproduce MITRE’s copyright designation and this license in any such copy. See the CWE Terms of Use. CWE™ is a trademark of The MITRE Corporation.
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- OWASP Application Security Verification Standard (ASVS) 5.0.0, Mai 2025, aus OWASP/ASVS: © 2008-2025 The OWASP Foundation, lizenziert unter CC BY-SA 4.0. Änderungen: in Abschnitte aufgeteilt und in das GRCA-Format umgewandelt, der Wortlaut unverändert. Diese Bearbeitungen stehen ebenfalls unter CC BY-SA 4.0.
- OWASP Mobile Application Security Verification Standard (MASVS) v2.1.0, Januar 2024, aus OWASP/masvs: © The OWASP Foundation, lizenziert unter CC BY-SA 4.0. Änderungen: in das GRCA-Format umgewandelt, der Wortlaut unverändert. Diese Bearbeitungen stehen ebenfalls unter CC BY-SA 4.0.
- OWASP Mobile Application Security Weakness Enumeration (MASWE) v1.0.0, August 2026, aus OWASP/maswe: © The OWASP Foundation, lizenziert unter CC BY-SA 4.0. Änderungen: in das GRCA-Format umgewandelt, der Wortlaut unverändert, mit den MASVS-Controls verknüpft, denen sie zugeordnet sind. Diese Bearbeitungen stehen ebenfalls unter CC BY-SA 4.0.
- OWASP Mobile Application Security Testing Guide (MASTG) v2.0.0, Juni 2026, aus OWASP/mastg: © The OWASP Foundation, lizenziert unter CC BY-SA 4.0. Nur die Tests und Best Practices, ohne Codebeispiele, Bilder, Werkzeuge und Apps. Änderungen: in das GRCA-Format umgewandelt, der Wortlaut unverändert; Verweise auf andere Seiten des MASTG als Links zu mas.owasp.org; die Schwachstelle jedes Tests in der Nummerierung der MASWE v1 und mit ihr verknüpft. Diese Bearbeitungen stehen ebenfalls unter CC BY-SA 4.0.
- OWASP Software Assurance Maturity Model (SAMM) v2.2.0, Juli 2026, aus owaspsamm/core: © The OWASP Foundation, lizenziert unter CC BY-SA 4.0. Änderungen: in das GRCA-Format umgewandelt, der Wortlaut unverändert; Kürzel (G-SM-1-A) aus dem Modell gebildet, die Assessment-Fragen als Prüfverfahren ihrer Aktivitäten. Diese Bearbeitungen stehen ebenfalls unter CC BY-SA 4.0.
- OWASP Top 10:2025, aus OWASP/Top10: © 2003-2025 The OWASP® Foundation, Inc., lizenziert unter CC BY-SA 4.0. Die zehn Kategorien, ohne die Symbole. Änderungen: in das GRCA-Format umgewandelt, der Wortlaut unverändert. Diese Bearbeitungen stehen ebenfalls unter CC BY-SA 4.0. Die Namen der zugeordneten CWEs (Common Weakness Enumeration): © 2006–2026 The MITRE Corporation. MITRE erlaubt die Nutzung für Forschung, Entwicklung und kommerzielle Zwecke, wenn jede Kopie den Urheberrechtsvermerk und die Lizenz enthält; maßgeblich ist der englische Wortlaut der Lizenz oben und die CWE Terms of Use. CWE™ ist eine Marke der MITRE Corporation.