Capgo RLS Bypass via Manifest Update Indirect Access

Capgo (capgo.app) blocks direct user inserts into the public.manifest table with a RESTRICTIVE row-level security policy, but that restriction can be bypassed indirectly. A principal holding an app-scoped upload/write/all API key (upload+ rights) or an authenticated user with write+ rights on an app can update public.app_versions.manifest on a version whose storage_provider is 'r2-direct', which is not covered by the bundle content-lock check. The on_version_update async worker trusts record.manifest and, using the service-role Supabase client, inserts the attacker-controlled file_name, file_hash, and s3_path into public.manifest before clearing app_versions.manifest. When a channel points to the crafted version, the /updates endpoint returns the service-role-created manifest entry as a client-facing download_url, enabling OTA manifest poisoning through a trusted async worker path. All versions are affected; no patch was available at the time of publication.

Casky was already ahead

This CVE exploits attack patterns that Casky's 224matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

CVE-2026-100619 exploits a privilege escalation flaw in Capgo's application versioning system where row-level security (RLS) policies protecting the public.manifest table can be circumvented through indirect database manipulation. Authenticated users or API keys with upload/write privileges can modify the public.app_versions.manifest column on versions using the 'r2-direct' storage provider, bypassing content integrity checks that would normally prevent unauthorized manifest changes. This vulnerability affects Capgo users managing mobile app updates, as attackers can inject malicious manifest data that the async worker processes without validation, potentially leading to unauthorized code execution or data manipulation across deployed applications.

Casky's 224 mapped security skills leverage Claude's extended reasoning to detect the attack chain associated with MITRE ATT&CK TA0004 (Privilege Escalation). When analyzing this CVE, practitioners would identify detection patterns for: indirect database access bypassing RLS controls, suspicious manifest modifications by low-privileged API keys, async worker processing of unvalidated input, and storage provider-specific policy gaps. Casky's skills would surface findings showing lateral movement through permission boundaries (CWE-266: Improper Privilege Management), flagging the disconnect between direct RLS restrictions and indirect update vectors, helping teams recognize similar authorization bypass patterns in their own database-driven architectures before exploitation occurs.

Live Threat IntelligenceComing soon

Casky Risk Score

—

EPSS Probability

—

Shodan Exposure

—

GreyNoise Signal

—

Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

224 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-100619.

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

Access with Stolen Session Cookie

identity access management · low

Run

MITRE ATT&CK Techniques

TA0004

Investigate the attack patterns behind CVE-2026-100619

Casky has 224 skills that investigate the attack patterns behind CVE-2026-100619. Run one and get CVSS-scored findings in 3 minutes.

Run the skill that detects this →

X Instagram LinkedIn