Capgo - Unsecured Supabase Images Bucket via Missing Row Level Security

published 2026-06-24 4 mo ago modified 2026-10-25 14 d ago also EUVD-2026-38749

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 28%
public exploits: 0; none known

Capgo before 12.128.2 contains an unsecured images bucket lacking any row level security controls, allowing unauthenticated attackers to read, insert, and delete stored app icons. Remote attackers can exploit this misconfiguration to delete all icons and leak sensitive app IDs and user IDs.

Patch / fix

fixed in 1

Capgo Capgo 12.128.2

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 4 mo ago (2026-06-24)

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/Cap-go/capgo/security/advisories/GHSA-8hq3-gg3m-vwvr referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	6.9	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CNA	4.0	6.9	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/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

Affected products

Capgo Capgo

Classification

Weakness

CWE-284 Improper Access Control

References

github.com /Cap-go/capgo/security/advisories/GHSA-8hq3-gg3m-vwvr
vendor-advisory, exploit
vulncheck.com /advisories/capgo-unsecured-supabase-images-bucket-via-missing-row-level-security
third-party-advisory

Sources

CVE List CVE-2026-56302
NVD CVE-2026-56302

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary