GHSA-V42G-7Q2X-CW32

Zendframework1 potential SQL injection vector using null byte for PDO (MsSql, SQLite)

The PDO adapters of Zend Framework 1 do not filter null bytes values in SQL statements. A PDO adapter can treat null bytes in a query as a string terminator, allowing an attacker to add arbitrary SQL following a null byte, and thus create a SQL injection.

We tested and verified the null byte injection using pdo_dblib (FreeTDS) on a Linux environment to access a remote Microsoft SQL Server, and also tested against and noted the vector against pdo_sqlite.

Untrusted input alters a database query, allowing the attacker to read or modify data the query was not intended to access. Typical impact: data disclosure or modification.

GHSA-V42G-7Q2X-CW32 has a CVSS score of 9.8 (Critical). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.12.16); upgrading removes the vulnerable code path.

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1. What is GHSA-V42G-7Q2X-CW32? GHSA-V42G-7Q2X-CW32 is a critical-severity SQL injection vulnerability in zendframework/zendframework1 (composer), affecting versions >= 1.12.0, < 1.12.16. It is fixed in 1.12.16. Untrusted input alters a database query, allowing the attacker to read or modify data the query was not intended to access.
2. How severe is GHSA-V42G-7Q2X-CW32? GHSA-V42G-7Q2X-CW32 has a CVSS score of 9.8 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of zendframework/zendframework1 are affected by GHSA-V42G-7Q2X-CW32? zendframework/zendframework1 (composer) versions >= 1.12.0, < 1.12.16 is affected.
4. Is there a fix for GHSA-V42G-7Q2X-CW32? Yes. GHSA-V42G-7Q2X-CW32 is fixed in 1.12.16. Upgrade to this version or later.
5. Is GHSA-V42G-7Q2X-CW32 exploitable, and should I be worried? Whether GHSA-V42G-7Q2X-CW32 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether GHSA-V42G-7Q2X-CW32 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix GHSA-V42G-7Q2X-CW32? Upgrade zendframework/zendframework1 to 1.12.16 or later.

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