Covered by FixVibehigh

. Trygdarkanningarlisti: Lyklar og goymsla ZXCVFIXVIBESEND ZXCVFIXVIBESEG1. Alneyðugur trygdarkanningarlisti fyri Supabase: at seta í verk trygd á røðarstigi (RLS), at umsita API lyklar og at tryggja goymsluspannir fyri at forða fyri ólógligari dátuatgongd. ZXCVFIXVIBESEND ZXCVFIXVIBESEG2. Henda granskingargreinin lýsir kritiskar trygdar uppsetingar til Supabase verkætlanir. Tað snýr seg um rætta umsiting av Row Level Security (RLS) til at verja dátugrunnsrøðir, trygga handfaring av anon og service_role API lyklum, og at umsita atgongdarstýring fyri goymsluatgongdarspannir fyri at minka um vandan fyri óloyvdum dátuútseting og óloyvdum dátum. ZXCVFIXVIBESEND ZXCVFIXVIBESEG3. ## Krókurin ZXCVFIXVIBESEND ZXCVFIXVIBESEG4. At tryggja eina ZXCVFIXVIBETOKEN3ZXCV verkætlan krevur eina fleirlags tilgongd, sum snýr seg um ZXCVFIXVIBETOKEN5ZXCV lyklaumsiting, dátugrunnatrygd og goymsluloyvi. Supabase Skeivt uppsett trygd á røðarstøði (ZXCVFIXVIBETOKEN4ZXCV) ella útsettir viðkvæmir lyklar kunnu føra til týðandi hendingar við dátuútseting. ZXCVFIXVIBEMERKI1ZXCV ZXCVFIXVIBEMERKI2ZXCV ZXCVFIXVIBESEND ZXCVFIXVIBESEG5. ## Hvat broyttist ZXCVFIXVIBESEND ZXCVFIXVIBESEG6. Henda kanningin raðfestir kjarnutrygdareftirlit fyri ZXCVFIXVIBETOKEN3ZXCV umhvørvi grundað á offisiellar arkitekturleiðreglur. Supabase Tað snýr seg um skiftið frá forsettum menningarkonfiguratiónum til framleiðsluherdar støður, serliga viðvíkjandi atgongdarstýringsmekanismum. ZXCVFIXVIBEMERKI1ZXCV ZXCVFIXVIBEMERKI2ZXCV ZXCVFIXVIBESEND ZXCVFIXVIBESEG7. ## Hvør er ávirkaður ZXCVFIXVIBESEND ZXCVFIXVIBESEG8. Forrit, sum nýta ZXCVFIXVIBETOKEN3ZXCV sum Backend-sum-ein-tænasta (ZXCVFIXVIBETOKEN5ZXCV), eru ávirkað, serliga tey, sum handfara brúkaraserligar dátur ella privatar ognir. RLS Forritarar, sum hava Supabase lykilin í bingjum á kundasíðuni ella ikki virkja ZXCVFIXVIBETOKEN4ZXCV, eru í stórum vanda. ZXCVFIXVIBEMERKI2ZXCV ZXCVFIXVIBESEND ZXCVFIXVIBESEG9. ## Hvussu málið virkar ZXCVFIXVIBESEND ZXCVFIXVIBESEG10 ZXCVFIXVIBETOKEN4ZXCV nýtir trygdina á røðarstigi hjá PostgreSQL til at avmarka dátuatgongdina. RLS Sum standard, um ZXCVFIXVIBETOKEN6ZXCV ikki er virkið á einum talvu, kann ein og hvør brúkari við Supabase lyklinum—sum ofta er almennur—atgongd til allar skráir. API Somuleiðis krevur ZXCVFIXVIBETOKEN5ZXCV Goymsla greiðar politikkir fyri at áseta, hvørjir brúkarar ella leiklutir kunnu útføra virksemi á fíluspannum. ZXCVFIXVIBEMERKI3ZXCV ZXCVFIXVIBESEND ZXCVFIXVIBESEG11 ## Hvat ein álopsmaður fær ZXCVFIXVIBESEND ZXCVFIXVIBESEG12 Ein álopsmaður, sum hevur ein almennan ZXCVFIXVIBETOKEN4ZXCV lykil, kann nýta talvur, sum mangla ZXCVFIXVIBETOKEN3ZXCV, til at lesa, broyta ella strika dátur, sum hoyra øðrum brúkarum til. Ólóglig atgongd til goymsluspannir kann føra til, at privatar brúkarafílur verða avdúkaðar ella at kritiskar forritaognir verða strikaðar. ZXCVFIXVIBEMERKI2ZXCV ZXCVFIXVIBESEND ZXCVFIXVIBESEG13 ## Hvussu Supabase roynir fyri tí ZXCVFIXVIBESEND ZXCVFIXVIBESEG14 RLS fevnir nú um hetta sum ein part av sínum API-kanningum. Supabase ummælir almenn ZXCVFIXVIBETOKEN3ZXCV Goymsluspannmetadata, dulnevnda objekt-lista eksponering, viðkvæma spannnavna og óbundnar goymslusignal frá almenna anon-markinum. Viðkomandi beinleiðis kanningar kanna tænastu-leiklutslyklaeksponering, ZXCVFIXVIBETOKEN4ZXCV REST/ZXCVFIXVIBETOKEN5ZXCV kropsburð, og goymslu SQL-flytingar fyri vantandi ZXCVFIXVIBETOKEN6ZXCV. ZXCVFIXVIBESEND ZXCVFIXVIBESEG15 ## Hvat skal rættast ZXCVFIXVIBESEND ZXCVFIXVIBESEG16 Virkja altíð Row Level Security á dátugrunnstalvum og seta í verk kornpolitikk fyri autentiseraðar brúkarar. Supabase Tryggja tær, at bert 'anon' lykilin verður brúktur í kodu á kundasíðuni, meðan 'service_role' lykilin er verandi á ambætaranum. RLS Konfigurera goymsluatgongdarstýring fyri at tryggja, at fíluspannir eru privatar sum standard og atgongdin bert verður veitt gjøgnum ávísar trygdarpolitikkir. ZXCVFIXVIBEMERKI2ZXCV

This research article outlines critical security configurations for Supabase projects. It focuses on the proper implementation of Row Level Security (RLS) to protect database rows, secure handling of anon and service_role API keys, and enforcing access control for storage buckets to mitigate risks of data exposure and unauthorized access.

CWE-284CWE-668

The hook

Securing a Supabase project requires a multi-layered approach focusing on API key management, database security, and storage permissions. [S1] Improperly configured Row Level Security (RLS) or exposed sensitive keys can lead to significant data exposure incidents. [S2] [S3]

What changed

This research consolidates core security controls for Supabase environments based on official architecture guidelines. [S1] It focuses on the transition from default development configurations to production-hardened postures, specifically regarding access control mechanisms. [S2] [S3]

Who is affected

Applications utilizing Supabase as a Backend-as-a-Service (BaaS) are affected, particularly those that handle user-specific data or private assets. [S2] Developers who include the service_role key in client-side bundles or fail to enable RLS are at high risk. [S1]

How the issue works

Supabase leverages PostgreSQL's Row Level Security to restrict data access. [S2] By default, if RLS is not enabled on a table, any user with the anon key—which is often public—can access all records. [S1] Similarly, Supabase Storage requires explicit policies to define which users or roles can perform operations on file buckets. [S3]

What an attacker gets

An attacker possessing a public API key can exploit tables missing RLS to read, modify, or delete data belonging to other users. [S1] [S2] Unauthorized access to storage buckets can lead to the exposure of private user files or the deletion of critical application assets. [S3]

How FixVibe tests for it

FixVibe now covers this as part of its Supabase checks. baas.supabase-security-checklist-backfill reviews public Supabase Storage bucket metadata, anonymous object-listing exposure, sensitive bucket naming, and anon-bound Storage signals from the public anon boundary. Related live checks inspect service-role key exposure, Supabase REST/RLS posture, and repository SQL migrations for missing RLS.

What to fix

Always enable Row Level Security on database tables and implement granular policies for authenticated users. [S2] Ensure that only the 'anon' key is used in client-side code, while the 'service_role' key remains on the server. [S1] Configure Storage Access Control to ensure that file buckets are private by default and access is granted only through defined security policies. [S3]