CVE-2026-100621
capgo.app Content-Lock Bypass via r2-direct Bundle Mutation
Capgo (capgo.app) contains an incomplete access-control/content-lock enforcement issue affecting all versions; no patch is available at the time of publication. The enforce_encrypted_bundle_trigger / check_encrypted_bundle_on_insert content lock in supabase/schemas/prod.sql exempts app_versions rows whose previous storage_provider is r2-direct, so delivery-critical columns (name, app_id, session_key, key_id, storage_provider, r2_path, external_url, checksum, manifest, native_packages) remain mutable while a row is in that state. Separately, the channel/version join used by the /updates endpoint (supabase/functions/_backend/utils/pg.ts) filters only deleted versions and does not exclude r2-direct versions, so such rows remain OTA-selectable. An attacker holding a Capgo API key with bundle write/upload permission can create or keep a bundle version in the r2-direct state, assign it to a channel, and then modify these fields via direct PostgREST requests, causing altered bundle metadata (for example checksum and session_key) to be served to devices through /updates. This bypasses the post-upload content immutability hardening added for a previous app_versions metadata-tampering issue.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
5.3
capgo.app Content-Lock Bypass via r2-direct Bundle Mutation
Capgo (capgo.app) contains an incomplete access-control/content-lock enforcement issue affecting all versions; no patch is available at the time of publication. The enforce_encrypted_bundle_trigger / check_encrypted_bundle_on_insert content lock in supabase/schemas/prod.sql exempts app_versions rows whose previous storage_provider is r2-direct, so delivery-critical columns (name, app_id, session_key, key_id, storage_provider, r2_path, external_url, checksum, manifest, native_packages) remain mutable while a row is in that state. Separately, the channel/version join used by the /updates endpoint (supabase/functions/_backend/utils/pg.ts) filters only deleted versions and does not exclude r2-direct versions, so such rows remain OTA-selectable. An attacker holding a Capgo API key with bundle write/upload permission can create or keep a bundle version in the r2-direct state, assign it to a channel, and then modify these fields via direct PostgREST requests, causing altered bundle metadata (for example checksum and session_key) to be served to devices through /updates. This bypasses the post-upload content immutability hardening added for a previous app_versions metadata-tampering issue.
- Record
CVE-2026-100621- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N - CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-284
- Updated
- 2026-11-02
EUVDEUVD-2026-87716
5.3
Capgo (capgo.app) contains an incomplete access-control/content-lock enforcement issue affecting all versions; no patch is available at the time of publication. The enforce_encrypted_bundle_trigger / check_encrypted_bundle_on_insert content lock in supabase/schemas/prod.sql exempts app_versions rows whose previous storage_provider is r2-direct, so delivery-critical columns (name, app_id, session_key, key_id, storage_provider, r2_path, external_url, checksum, manifest, native_packages) remain mutable while a row is in that state. Separately, the channel/version join used by the /updates endpoint (supabase/functions/_backend/utils/pg.ts) filters only deleted versions and does not exclude r2-direct versions, so such rows remain OTA-selectable. An attacker holding a Capgo API key with bundle write/upload permission can create or keep a bundle version in the r2-direct state, assign it to a channel, and then modify these fields via direct PostgREST requests, causing altered bundle metadata (for example checksum and session_key) to be served to devices through /updates. This bypasses the post-upload content immutability hardening added for a previous app_versions metadata-tampering issue.
- Record
EUVD-2026-87716- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-7957-wr5g-x2vr
5.3
Capgo (capgo.app) contains an incomplete access-control/content-lock enforcement issue affecting...
Capgo (capgo.app) contains an incomplete access-control/content-lock enforcement issue affecting all versions; no patch is available at the time of publication. The enforce_encrypted_bundle_trigger / check_encrypted_bundle_on_insert content lock in supabase/schemas/prod.sql exempts app_versions rows whose previous storage_provider is r2-direct, so delivery-critical columns (name, app_id, session_key, key_id, storage_provider, r2_path, external_url, checksum, manifest, native_packages) remain mutable while a row is in that state. Separately, the channel/version join used by the /updates endpoint (supabase/functions/_backend/utils/pg.ts) filters only deleted versions and does not exclude r2-direct versions, so such rows remain OTA-selectable. An attacker holding a Capgo API key with bundle write/upload permission can create or keep a bundle version in the r2-direct state, assign it to a channel, and then modify these fields via direct PostgREST requests, causing altered bundle metadata (for example checksum and session_key) to be served to devices through /updates. This bypasses the post-upload content immutability hardening added for a previous app_versions metadata-tampering issue.
- Record
GHSA-7957-wr5g-x2vr- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-284
- Updated
- 2026-11-02
NVD
5.3
Capgo (capgo.app) contains an incomplete access-control/content-lock enforcement issue affecting all versions; no patch is available at the time of publication. The enforce_encrypted_bundle_trigger / check_encrypted_bundle_on_insert content lock in supabase/schemas/prod.sql exempts app_versions rows whose previous storage_provider is r2-direct, so delivery-critical columns (name, app_id, session_key, key_id, storage_provider, r2_path, external_url, checksum, manifest, native_packages) remain mutable while a row is in that state. Separately, the channel/version join used by the /updates endpoint (supabase/functions/_backend/utils/pg.ts) filters only deleted versions and does not exclude r2-direct versions, so such rows remain OTA-selectable. An attacker holding a Capgo API key with bundle write/upload permission can create or keep a bundle version in the r2-direct state, assign it to a channel, and then modify these fields via direct PostgREST requests, causing altered bundle metadata (for example checksum and session_key) to be served to devices through /updates. This bypasses the post-upload content immutability hardening added for a previous app_versions metadata-tampering issue.
- Record
CVE-2026-100621- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-284
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-100621 is a medium vulnerability (CVSS 5.3) in Cap-go Capgo.app, published September 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 18th percentile. No source names a fixed version.