CVE-2026-88355
NONE—CVSS v3
—CVSS v2
—
EPSS (exploit probability)
—CWE
Description
An incorrect buffer size calculation vulnerability exists in tinyexpr commit 4a7456e in new_expr(). For arity-0 expression nodes, including constants, variables, and zero-argument functions, the function allocates less memory than sizeof(te_expr) but treats the returned allocation as a complete te_expr object. This results in undefined behavior and can cause deterministic process termination in UBSan-instrumented builds.
Affected routers (0)
No routers currently mapped to this CVE in our database.