Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-56254

In @capgo/capacitor-updater (Cap-go/capgo) before 12.128.2, the end-to-end encryption scheme distributes the private key to each device that downloads the app. Because the public key can be derived from the private key, an attacker performing a man-in-the-middle attack or compromising the Capgo server can create a validly signed update bundle and cause devices to install an update not produced by the original app maker.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d6ec13c815fe7dd830f1e8cc5c7549d34d56c73a9006fd8f698fe13677accccf
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.3,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c94a70c12174f45d234dabea05d26fd9b3ca25c1a76929f110ee2d15ec86ee1c · sha256:4e5018047c0a0682… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c94a70c12174f45d234dabea05d26fd9b3ca25c1a76929f110ee2d15ec86ee1c · sha256:4e5018047c0a0682… · /containers/cna/metrics/1/cvssV3_1

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","packageURL":"pkg:npm/capgo/capacitor-updater","product":"capacitor-updater","vendor":"capacitor-updater","versions":[{"lessThan":"12.128.2","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"12.128.2","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c94a70c12174f45d234dabea05d26fd9b3ca25c1a76929f110ee2d15ec86ee1c · sha256:4e5018047c0a0682… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.3,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c94a70c12174f45d234dabea05d26fd9b3ca25c1a76929f110ee2d15ec86ee1c · sha256:4e5018047c0a0682… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c94a70c12174f45d234dabea05d26fd9b3ca25c1a76929f110ee2d15ec86ee1c · sha256:4e5018047c0a0682… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-320","description":"Key Management Errors","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c94a70c12174f45d234dabea05d26fd9b3ca25c1a76929f110ee2d15ec86ee1c · sha256:4e5018047c0a0682… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"GitHub Security Advisory (GHSA-j2f4-4pfc-p8rx)","tags":["vendor-advisory"],"url":"https://github.com/Cap-go/capgo/security/advisories/GHSA-j2f4-4pfc-p8rx"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c94a70c12174f45d234dabea05d26fd9b3ca25c1a76929f110ee2d15ec86ee1c · sha256:4e5018047c0a0682… · /containers/cna/references/0
{"name":"VulnCheck Advisory: capacitor-updater - End-to-End Encryption Bypass via Private Key Distribution","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/capacitor-updater-end-to-end-encryption-bypass-via-private-key-distribution"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c94a70c12174f45d234dabea05d26fd9b3ca25c1a76929f110ee2d15ec86ee1c · sha256:4e5018047c0a0682… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer