Analysis Run

019b3844-b07a-7186-a290-5587c8539089

complete

Chain ID

1

Address

0x99d0639656dca174c31586d9043aac805e6c3709

Block Number

—

Created

Fri, Dec 19, 2025 8:19 PM

Review Summary

What survived the funnel

Open this run to answer one question: is this real attacker-relevant behavior with real impact, or just normal contract plumbing?

back to vulns open contract

Confirmed

0

Validated

0

Source

Bytecode only

Review Backing

Not yet

Best current signal

Untrusted DELEGATECALL target reachable

crit 0 high 0 direct contract

Review Checklist

1. Read the findings table first. Ignore raw jobs until the result looks real.

2. Confirm attacker control, not just the existence of a sink.

3. Confirm money or privilege impact.

4. Keep it if the behavior is real. Kill it if this is normal proxy, admin, or upgrade plumbing.

Processing Jobs

Status & attempts

ID	Type	Status	Attempts	Heartbeat
18165	artifact.fetch	complete	1 / 3	3 months ago
18166	tool.cast_disasm	complete	1 / 3	3 months ago
100883	analysis.bundle	complete	1 / 3	1 week ago
100884	capability.graph	complete	1 / 3	1 week ago
100885	detector.run	complete	1 / 3	1 week ago
100886	validation.fork	complete	1 / 3	1 week ago

Artifact

Runtime bytecode: available

Creation TX: —

Deployer: —

Proxy: no

Implementation:

—

Verified Source: no

Slither

tool.slither

No slither job recorded yet.

Codex

report.consolidate

No codex job recorded yet.

Opcode Heuristics

tool.cast_disasm

Delegatecall

1

Selfdestruct

0

CREATE2

0

CALL-family (heavy)

0

EXT*/BALANCE

1

Total opcodes

148

Flags

delegatecall_present

View cast disassembly output

00000000: PUSH1 0x80
00000002: PUSH1 0x40
00000004: MSTORE
00000005: CALLDATASIZE
00000006: PUSH1 0x10
00000008: JUMPI
00000009: PUSH1 0x0e
0000000b: PUSH1 0x13
0000000d: JUMP
0000000e: JUMPDEST
0000000f: STOP
00000010: JUMPDEST
00000011: PUSH1 0x0e
00000013: JUMPDEST
00000014: PUSH1 0x00
00000016: PUSH1 0x1b
00000018: PUSH1 0x40
0000001a: JUMP
0000001b: JUMPDEST
0000001c: SWAP1
0000001d: POP
0000001e: CALLDATASIZE
0000001f: PUSH1 0x00
00000021: DUP1
00000022: CALLDATACOPY
00000023: PUSH1 0x00
00000025: DUP1
00000026: CALLDATASIZE
00000027: PUSH1 0x00
00000029: DUP5
0000002a: GAS
0000002b: DELEGATECALL
0000002c: RETURNDATASIZE
0000002d: PUSH1 0x00
0000002f: DUP1
00000030: RETURNDATACOPY
00000031: DUP1
00000032: DUP1
00000033: ISZERO
00000034: PUSH1 0x3b
00000036: JUMPI
00000037: RETURNDATASIZE
00000038: PUSH1 0x00
0000003a: RETURN
0000003b: JUMPDEST
0000003c: RETURNDATASIZE
0000003d: PUSH1 0x00
0000003f: REVERT
00000040: JUMPDEST
00000041: PUSH1 0x00
00000043: PUSH1 0x48
00000045: PUSH1 0x57
00000047: JUMP
00000048: JUMPDEST
00000049: SLOAD
0000004a: PUSH1 0x01
0000004c: PUSH1 0x01
0000004e: PUSH1 0xa0
00000050: SHL
00000051: SUB
00000052: AND
00000053: SWAP2
00000054: SWAP1
00000055: POP
00000056: JUMP
00000057: JUMPDEST
00000058: PUSH1 0x00
0000005a: DUP1
0000005b: PUSH1 0x40
0000005d: MLOAD
0000005e: PUSH1 0x20
00000060: ADD
00000061: PUSH1 0xa4
00000063: SWAP1
00000064: PUSH1 0x20
00000066: DUP1
00000067: DUP3
00000068: MSTORE
00000069: PUSH1 0x21
0000006b: SWAP1
0000006c: DUP3
0000006d: ADD
0000006e: MSTORE
0000006f: PUSH32 0x696f2e73796e7468657469782e636f72652d636f6e7472616374732e50726f78
00000090: PUSH1 0x40
00000092: DUP3
00000093: ADD
00000094: MSTORE
00000095: PUSH1 0x79
00000097: PUSH1 0xf8
00000099: SHL
0000009a: PUSH1 0x60
0000009c: DUP3
0000009d: ADD
0000009e: MSTORE
0000009f: PUSH1 0x80
000000a1: ADD
000000a2: SWAP1
000000a3: JUMP
000000a4: JUMPDEST
000000a5: PUSH1 0x40
000000a7: DUP1
000000a8: MLOAD
000000a9: PUSH1 0x1f
000000ab: NOT
000000ac: DUP2
000000ad: DUP5
000000ae: SUB
000000af: ADD
000000b0: DUP2
000000b1: MSTORE
000000b2: SWAP2
000000b3: SWAP1
000000b4: MSTORE
000000b5: DUP1
000000b6: MLOAD
000000b7: PUSH1 0x20
000000b9: SWAP1
000000ba: SWAP2
000000bb: ADD
000000bc: KECCAK256
000000bd: SWAP3
000000be: SWAP2
000000bf: POP
000000c0: POP
000000c1: JUMP
000000c2: INVALID
000000c3: LOG2
000000c4: PUSH5 0x6970667358
000000ca: UNKNOWN(0x22)
000000cb: SLT
000000cc: KECCAK256
000000cd: UNKNOWN(0x29)
000000ce: UNKNOWN(0xEB)
000000cf: UNKNOWN(0xC8)
000000d0: PUSH1 0x41
000000d2: UNKNOWN(0xB7)
000000d3: EXTCODEHASH
000000d4: DUP1
000000d5: UNKNOWN(0x29)
000000d6: UNKNOWN(0xD8)
000000d7: PUSH26 0xf02589ee5d9aa1c29ba2bcbdfbca9eb42d6430667164736f6c63
000000f2: NUMBER
000000f3: STOP
000000f4: ADDMOD
000000f5: ISZERO
000000f6: STOP
000000f7: CALLER

View stderr

Warning: This is a nightly build of Foundry. It is recommended to use the latest stable version. To mute this warning set `FOUNDRY_DISABLE_NIGHTLY_WARNING` in your environment.

Findings

validated = confirmed for call sinks; sink observed for others

Severity	Category	Tool	Title	Confidence	Validated	Confirmed	Details
critical	upgradeability	detector	Untrusted DELEGATECALL target reachable	70	no	no	view trace_id: 0x3580d57c0c6b7c5fea716a12df3802d3c7d17d8f54df553413e00ac1ebda4c7e call_targets: 0x5bfa6ff9e71031844fd241aa54a10b953e247bee target_varies: no classification: constant_target validation_json { "sink": "DELEGATECALL", "errors": 0, "status": "sink_reached", "attempts": 1, "trace_id": "0x3580d57c0c6b7c5fea716a12df3802d3c7d17d8f54df553413e00ac1ebda4c7e", "confirmed": false, "trace_mode": "callTracer", "call_targets": [ "0x5bfa6ff9e71031844fd241aa54a10b953e247bee" ], "matched_probe": null, "target_varies": false, "classification": "constant_target" } witness_json { "notes": "heuristic witness; entrypoints are best-effort selectors with zeroed calldata", "constraints": [], "entrypoints": [ { "calldata": "0x", "selector": "fallback", "calldata_variants": [ "0x" ] } ] } evidence_json { "examples": [ { "pc": 43, "opcode": "DELEGATECALL", "returndata_checked": null, "value_expression_category": "n/a", "target_expression_category": "computed" } ], "guards_detected": [], "delegatecall_count": 1, "untrusted_delegatecall_count": 1 }

Severity

Category

Tool

Title

Confidence

Validated

Confirmed

Details

critical

upgradeability

detector

Untrusted DELEGATECALL target reachable

70

no

view

trace_id: 0x3580d57c0c6b7c5fea716a12df3802d3c7d17d8f54df553413e00ac1ebda4c7e

call_targets: 0x5bfa6ff9e71031844fd241aa54a10b953e247bee

target_varies: no

classification: constant_target

validation_json

{
    "sink": "DELEGATECALL",
    "errors": 0,
    "status": "sink_reached",
    "attempts": 1,
    "trace_id": "0x3580d57c0c6b7c5fea716a12df3802d3c7d17d8f54df553413e00ac1ebda4c7e",
    "confirmed": false,
    "trace_mode": "callTracer",
    "call_targets": [
        "0x5bfa6ff9e71031844fd241aa54a10b953e247bee"
    ],
    "matched_probe": null,
    "target_varies": false,
    "classification": "constant_target"
}

witness_json

{
    "notes": "heuristic witness; entrypoints are best-effort selectors with zeroed calldata",
    "constraints": [],
    "entrypoints": [
        {
            "calldata": "0x",
            "selector": "fallback",
            "calldata_variants": [
                "0x"
            ]
        }
    ]
}

evidence_json

{
    "examples": [
        {
            "pc": 43,
            "opcode": "DELEGATECALL",
            "returndata_checked": null,
            "value_expression_category": "n/a",
            "target_expression_category": "computed"
        }
    ],
    "guards_detected": [],
    "delegatecall_count": 1,
    "untrusted_delegatecall_count": 1
}