Open_Ultra_SAST/benchmarks/pairs/mechanisms.toml

# Closed mechanism vocabulary for pair labels (pair-corpus-honesty, Req 2.1).
# Every [[pair.expected]] row names one of these ids. Bump `version` when the set changes.
version = "2"

[[mechanism]]
id = "source_reaches_sink"
definition = "A fact-listed source flows by name into a fact-listed sink without a sanitizer."

[[mechanism]]
id = "container_taint"
definition = "Taint travels through a mutable container or config object (list.append, dict[key], ConfigParser.set/get) before the sink."

[[mechanism]]
id = "config_sink_weak_literal"
definition = "A configuration sink is dangerous because of a literal argument (hashlib.new('md5'), MessageDigest 'SHA-1', debug=True)."

[[mechanism]]
id = "unchecked_length_copy"
definition = "A copy or read uses a length or index that is not bounded by a dominating check."

[[mechanism]]
id = "unchecked_alloc_size"
definition = "An allocation size derives from untrusted or unbounded input."

[[mechanism]]
id = "null_deref_unguarded"
definition = "A pointer that may be NULL is dereferenced without a dominating NULL test."

[[mechanism]]
id = "signed_size_operand"
definition = "A signed or narrower type feeds a size or length operand and can wrap."

[[mechanism]]
id = "fixed_buffer_capacity"
definition = "A fixed-size buffer receives data larger than its declared capacity."

[[mechanism]]
id = "identity_from_request_body"
definition = "A user or owner identity is taken from the request body or query instead of the authenticated context."

[[mechanism]]
id = "missing_auth_guard"
definition = "A route or handler performs a privileged action with no authentication or authorization guard on its path."

[[mechanism]]
id = "secret_in_client"
definition = "A secret or privileged key is shipped to client-side code or committed configuration."

[[mechanism]]
id = "permissive_default"
definition = "A security control is left at a permissive default (RLS off, CORS wildcard, debug mode, open bucket)."

[[mechanism]]
id = "path_join_user_input"
definition = "A filesystem path is built from user input without normalization or containment."

[[mechanism]]
id = "prototype_pollution"
definition = "Attacker-controlled keys reach a recursive merge or assignment that writes Object.prototype."

[[mechanism]]
id = "redos"
definition = "A regular expression with catastrophic backtracking is applied to untrusted input."

[[mechanism]]
id = "uaf"
definition = "Memory is used after it was released."

[[mechanism]]
id = "type_confusion"
definition = "A value is interpreted as a type it is not."

[[mechanism]]
id = "validation_strength"
definition = "A validator exists but accepts inputs it should reject; the fix strengthens the check."

[[mechanism]]
id = "cross_artifact"
definition = "The bug is only decidable with an artifact outside the vendored files (a properties file, a schema, a build flag)."

[[mechanism]]
id = "unconstrained_protected_read"
definition = "A read of a protected resource reaches the store without an identity constraint or ownership check bound from the authenticated context (authorization-obligations, protected_read)."

[[mechanism]]
id = "unconstrained_protected_write"
definition = "A write to a protected resource reaches the store without an identity constraint or ownership check bound from the authenticated context (authorization-obligations, protected_write)."

[[mechanism]]
id = "unguarded_privileged_action"
definition = "A privileged action is reached by a handler without a dominating path guard or ownership check (authorization-obligations, privileged_action)."

[[mechanism]]
id = "other"
definition = "Not yet classified. Present so bulk-mined pairs load; review should replace it."