Payload class · ssrf

URL Consumer Parser Probes

Controlled URL variations for comparing save-time validation with delivery-time parsing. Every sample still targets the owned listener. Acceptance, DNS resolution, HTTP delivery, redirect following, and response use are separate facts.

url-parserwebhookssrfredirectnormalizationoast

Stable IDpayload:url-consumer-probesSource record date2026-08-20Human reviewNot recordedProvenanceSource-linked

Context first

Use as a detection primitive

Controlled URL variations for comparing save-time validation with delivery-time parsing. Every sample still targets the owned listener. Acceptance, DNS resolution, HTTP delivery, redirect following, and response use are separate facts.

Do not copy blind

Identify the parser, sink, encoding, and expected non-vulnerable behavior before choosing a sample. Prefer non-destructive markers.

Private OAST contract

Use one readable case ID plus a random opaque suffix for every request, field, and variant. Keep one unsubmitted ambient-noise token. Put no secrets or target data in labels, paths, or queries. Redact at ingestion, never publish raw callback logs, and clean up controlled records after sufficient proof.

Samples

Recorded payloads

Detection sampleAuthorization required

Confirm the sink and encoding context before use.

https://url017-baseline.UNIQUE.oast.example/receive

Expected signal: Not verified for this generic template. Confirm the exact tool version and expected output in its official documentation before use.
Negative control: Define a known-safe or nonexistent target that should produce a meaningfully different result.
Effect and bounds: Unknown until flags and target are reviewed. Assume the command sends traffic or changes local state unless the tool documentation proves otherwise.

Detection sampleAuthorization required

Confirm the sink and encoding context before use.

HTTPS://url017-scheme-case.UNIQUE.oast.example/receive

Expected signal: Not verified for this generic template. Confirm the exact tool version and expected output in its official documentation before use.
Negative control: Define a known-safe or nonexistent target that should produce a meaningfully different result.
Effect and bounds: Unknown until flags and target are reviewed. Assume the command sends traffic or changes local state unless the tool documentation proves otherwise.

Detection sampleAuthorization required

Confirm the sink and encoding context before use.

https://url017-default-port.UNIQUE.oast.example:443/receive

Expected signal: Not verified for this generic template. Confirm the exact tool version and expected output in its official documentation before use.
Negative control: Define a known-safe or nonexistent target that should produce a meaningfully different result.
Effect and bounds: Unknown until flags and target are reviewed. Assume the command sends traffic or changes local state unless the tool documentation proves otherwise.

Detection sampleAuthorization required

Confirm the sink and encoding context before use.

https://url017-trailing-dot.UNIQUE.oast.example./receive

Expected signal: Not verified for this generic template. Confirm the exact tool version and expected output in its official documentation before use.
Negative control: Define a known-safe or nonexistent target that should produce a meaningfully different result.
Effect and bounds: Unknown until flags and target are reviewed. Assume the command sends traffic or changes local state unless the tool documentation proves otherwise.

Detection sampleAuthorization required

Confirm the sink and encoding context before use.

https://[email protected]/receive

Expected signal: Not verified for this generic template. Confirm the exact tool version and expected output in its official documentation before use.
Negative control: Define a known-safe or nonexistent target that should produce a meaningfully different result.
Effect and bounds: Unknown until flags and target are reviewed. Assume the command sends traffic or changes local state unless the tool documentation proves otherwise.

Detection sampleAuthorization required

Confirm the sink and encoding context before use.

https://url017-fragment.UNIQUE.oast.example/receive#allowed.example

Expected signal: Not verified for this generic template. Confirm the exact tool version and expected output in its official documentation before use.
Negative control: Define a known-safe or nonexistent target that should produce a meaningfully different result.
Effect and bounds: Unknown until flags and target are reviewed. Assume the command sends traffic or changes local state unless the tool documentation proves otherwise.

Detection sampleAuthorization required

Confirm the sink and encoding context before use.

//url017-relative.UNIQUE.oast.example/receive

Expected signal: Not verified for this generic template. Confirm the exact tool version and expected output in its official documentation before use.
Negative control: Define a known-safe or nonexistent target that should produce a meaningfully different result.
Effect and bounds: Unknown until flags and target are reviewed. Assume the command sends traffic or changes local state unless the tool documentation proves otherwise.

Detection sampleAuthorization required

Confirm the sink and encoding context before use.

https:%2f%2furl017-encoded.UNIQUE.oast.example%2freceive

Expected signal: Not verified for this generic template. Confirm the exact tool version and expected output in its official documentation before use.
Negative control: Define a known-safe or nonexistent target that should produce a meaningfully different result.
Effect and bounds: Unknown until flags and target are reviewed. Assume the command sends traffic or changes local state unless the tool documentation proves otherwise.

Source

Attribution

Open the primary collection ↗

Version history: normalized permanent page created 2026-08-20.