Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CVE-2026-7816
Summary
OS command injection (CWE-78) vulnerability in pgAdmin 4 Import/Export query export. User-supplied input was interpolated directly into a psql `\copy` metacommand template without sanitization. An authenticated user could inject ") TO PROGRAM 'cmd'" to break out of the \copy (...) context and achieve arbitrary command execution on the pgAdmin server, or ") TO '/path'" for arbitrary file write. Additional fields (format, on_error, log_verbosity) were also raw-interpolated and exploitable. Fix adds a `parens-balance` parser modeled on psql's `strtokx` tokenizer, allow-lists `format/on_error/log_verbosity`, rejects null bytes in the query, and tightens type and gating checks. This issue affects pgAdmin4 prior to 9.15.
- LOW
- NETWORK
- HIGH
- UNCHANGED
- NONE
- LOW
- HIGH
- HIGH
CWE-78 - OS Command Injection
The OS command injection weakness (also known as shell injection) is a vulnerability which enables an attacker to run arbitrary OS commands on a server. This is done by modifying the intended downstream OS command and injecting arbitrary commands, enabling the execution of unauthorized OS commands. This has the potential to fully compromise the application along with all of its data, and, if the compromised process does not follow the principle of least privileges, it may compromise other parts of the hosting infrastructure as well. This weakness is listed as number ten in the 'CWE Top 25 Most Dangerous Software Weaknesses'.
Advisory Timeline
- Published
