PostgreSQL pg_show_all_settings() Use-After-Free (<=16.15, <=17.11, <=18.6)
CVE-2026-120152 Published on November 12, 2026
PostgreSQL pg_show_all_settings() use-after-free discloses memory
Use after free in PostgreSQL pg_show_all_settings() allows a database user to retrieve memory contents, via loading a module while the function is scanning custom-variable placeholders that the module replaces and frees. Within major versions 16-18, minor versions before PostgreSQL 18.7, 17.12, and 16.16 are affected. Versions before PostgreSQL 16 are unaffected.
Vulnerability Analysis
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-120152 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-120152
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Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.