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Severity Labs

Independent vulnerability triage

Triage that earns its keep.

We validate the security reports your bug bounty program receives — whether the program is public, private, self-hosted, or running on HackerOne, Bugcrowd, YesWeHack, or Bug Bounty Switzerland. Reports come in, signal goes out, ready for your engineers to fix.

Reports
1,000+
Programs
100+
Years
5+
Bugcrowd
MVP

The problem

What goes wrong when triage isn't someone's job.

01

The inbox is mostly noise.

Duplicates, out-of-scope reports, and informational submissions drown the real bugs. Sorting through it is a job in itself.

02

Slow replies burn hunters.

Researchers move on to programs that respond. A two-week silence is a closed door — and a public complaint waiting to happen.

03

Your AppSec team has a day job.

Engineers paid to ship secure code shouldn't spend mornings reproducing reflected XSS in a marketing subdomain.

Why hire a triager

An AppSec engineer's morning is worth more than a triage queue.

A senior application security engineer costs somewhere between $180k and $260k all-in. If they spend 90 minutes a day reproducing reports, deduplicating spam, and writing polite no-thank-yous, that's roughly a fifth of their week — about $40k a year — spent doing work that doesn't ship safer code.

See how it works →
  • ≈ 60–80%

    of typical inbound

    is duplicate, out of scope, or informational. Sorting it is the job nobody wants and the part that bottlenecks everything else.

  • ≈ 14 days

    median time-to-first-response

    across the bug bounty programs we observe. Above ten days, hunter trust starts to evaporate and quality submissions drop.

  • 1 retainer

    vs. one open headcount

    you don't need to fill. We handle the queue at the cost of a fraction of an FTE — and only when the queue exists.

What we do

Four steps. Every report. Every time.

The work is ordinary, but it has to be done well. Here's the shape of it.

  1. 01

    Intake

    Every report lands with us first. We acknowledge within SLA, deduplicate against history, and confirm scope before anyone on your team is paged.

  2. 02

    Validate

    We reproduce the issue end-to-end, capture clean evidence, and reject what doesn't hold up. No vague maybe-tickets reach your engineers.

  3. 03

    Score

    CVSS 3.1 with a written justification, plus a business-context severity. You get the standard score and the one that actually reflects risk.

  4. 04

    Hand off

    A dev-ready report goes straight into your tracker — repro steps, impact, suggested fix direction, affected assets. Closeout messaging to the hunter is on us.

How triage typically gets done

Three ways teams handle inbound. Here's where we fit alongside the others.

Severity Labs sits at the intersection of high volume capacity and independent validation. Platform-managed triage covers volume but is not independent. Your AppSec team is independent but bandwidth-limited.VOLUME CAPACITYINDEPENDENTPlatform-managedtriageHackerOne · BugcrowdYour AppSecteamIn-house, on the sideSEVERITY LABSBoth — independent validation at full triage capacity.

Your AppSec team does it

Hidden — engineering time

  • In-house product knowledge
  • No external relationship
  • Burns engineering hours on duplicates and out-of-scope
  • Slow during sprint crunch
  • Single-point-of-failure when the lead is on leave

VerdictWorks for a low-volume self-hosted setup or a quiet platform program — until it doesn't.

Platform-managed triage (HackerOne, Bugcrowd, etc.)

Bundled in your managed plan

  • Included on managed tiers
  • Hunter pool baked in
  • Quality varies by program and triager
  • No independent validation of severity
  • Not available on self-hosted or self-serve plans

VerdictFine baseline if you're on a managed plan. Pair us with it when you want a second pair of eyes on highs and criticals.

See full comparison

Severity Labs

Fraction of an FTE

  • Independent — works with any program type or platform
  • Dedicated humans, not a SaaS
  • Triager who's been on the hunter side at scale
  • Not a hunter pool — bring your own program
  • Not a fit if your inbound is under five reports a month

VerdictRight answer when triage needs to be someone's full-time job, regardless of where your reports come from.

What you get

The output your engineers can actually use.

Every valid finding ships as a complete, dev-ready report. Hunters get a real reply. You get a clean view of what's coming in.

  • Dev-ready reports

    Each valid finding becomes a Jira, Linear, or GitHub issue your engineers can pick up cold.

  • CVSS 3.1 scoring

    Vector strings with written justification. No copy-pasted base scores.

  • Hunter communication

    Acknowledgement, follow-ups, retest, and final disposition. In your program's voice.

  • Weekly summaries

    What came in, what was valid, what's pending. One email, five minutes to read.

  • Program health reports

    Quarterly view of submission trends, hunter quality, and asset hotspots.

Report excerpt

SL-2418

Title

Stored XSS in reviewer comment field

Severity

High

CVSS 3.1

7.4

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

Asset

app.example.com/reviews/{id}/comments

Repro

POST /api/reviews/{id}/comments with body=<svg/onload=fetch(...)>

Impact

Session theft of any reviewer who opens the affected review.

Fix

Sanitize on render; CSP nonce on inline handlers; reject raw HTML server-side.

Status

Validated

Reports triaged
1,000+
Programs worked
100+
Years in bounty
5+
Bugcrowd recognition
MVP

FAQ

Questions we get before the first call.

  • Acknowledgement, deduplication, scope check, full reproduction, CVSS scoring, written justification, dev-ready report, hunter response, and retest when the fix ships.

Get started

Stop letting reports pile up.

Hunters lose interest. Engineers lose mornings. The next report is already in the inbox.