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Get paid to secure open source 475 paid open-source programs on Sorona, up to $1M Perk Low bugs: $100 or 1 mo Claude Max

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sorona.xyz bug bounty programs

libexpat.github.io Updated

Sorona.xyz runs one public program: a Sorona bug bounty paying up to $1,500.

Top reward
$1,500
Sorona
Programs
1
1 pays cash
Targets in scope
9
2 types
Last change
None yet
Tracked since Nov 2026

Where to report

The one public program sorona.xyz runs.

  • expat

    Sorona · Bug bounty

    Open

    Top reward

    $1,500
    Critical
    –
    High
    –
    Medium
    –
    Low
    $100
    Safe harbor
    Partial

Amounts are the top reward per severity in the currency each program pays. First response is the platform's measured average when it publishes one, else what the policy promises.

What is in scope

9 targets. 5 excluded.

  • https://libexpat.github.io

    Web

  • Character and encoding conversion inside the tokenizer

    Products and areas

  • Content processing in doContent

    Products and areas

  • Entity handling and entity-reference expansion, including the general-entity (XML_GE) path and behavior with and without the XML_DTD compile flag

    Products and areas

  • Namespace processing and attribute and token handling

    Products and areas

  • Parser creation and reset paths, including XML_ParserCreate, XML_ExternalEntityParserCreate, and XML_ResumeParser

    Products and areas

  • Prolog and DOCTYPE and DTD processing, covering doProlog, dtdCopy, and the scaffolding index handling around nextScaffoldPart

    Products and areas

  • Reparse-deferral and big-token accumulation buffers

    Products and areas

  • The core streaming parser (XML_Parse and XML_ParseBuffer) when fed untrusted XML input

    Products and areas

No target matches. Try part of a host name, such as the company name.

Out of scope 5

Don't test these. A program can exclude a host another program covers; the program you report to decides.

  • Application-level misuse of the API that does not stem from a parser defect

  • Behavior governed by compile-time flags where the deployment chose the weaker configuration; billion-laughs protection has shipped since 2.4.0 for XML_DTD builds, with builds lacking it and isolated external-entity parsers hardened in 2.6.0 and 2.6.2, so old or misconfigured builds are a packaging concern rather than a new library bug

  • Hardening recommendations or scanner output with no demonstrated exploit

  • Public disclosure of an unfixed vulnerability on the issue tracker; the policy requires private email first

  • Reports missing either an impact description or reproduction steps, both of which are required

Recent changes

Reward and scope changes across every sorona.xyz program, newest first.

No changes recorded yet. New targets and reward moves show up here and in the RSS feed.

About this page

This page gathers every public program listed under libexpat.github.io: platform programs, self-hosted policies and security.txt contacts. Each program's own policy decides what is in scope and what it pays; check it before you test.

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