CVE-2026-82454

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-82454
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-82454.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-82454
Published
2026-08-29T13:47:56Z
Modified
2026-09-02T03:31:02Z
Severity
  • 9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Omnivore before android-0.227.0 Authentication Bypass via Apple Sign-in
Details

The Omnivore API (packages/api) before the fix in commit abf53d6 contains an authentication bypass in Apple sign-in token verification. The decodeAppleToken function extracted the 'alg' field from the attacker-supplied JWT header and passed it as the sole allowed algorithm to jwt.verify(). Using jsonwebtoken v8 (which does not validate key/algorithm compatibility), an attacker can set alg=HS256 and sign a forged token using Apple's publicly available RSA public key as the HMAC secret, bypassing signature verification and impersonating any Apple-linked account.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-347"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82454.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "abf53d650875"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/omnivore-app/omnivore

Affected ranges

Type
GIT
Repo
https://github.com/omnivore-app/omnivore
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
abf53d6508755d3d22a994e28e370a9193ea977a
Database specific
Show details 
{
    "source": "REFERENCES"
}

Affected versions

android-0.*
android-0.0.101
android-0.0.102
android-0.0.110
android-0.0.118
android-0.0.122
android-0.0.124
android-0.0.126
android-0.0.130
android-0.0.132
android-0.0.134
android-0.0.146
android-0.0.152
android-0.0.158
android-0.0.170
android-0.0.178
android-0.190.0
android-0.192.0
android-0.194.0
android-0.194.1
android-0.200.1
android-0.200.2
android-0.200.4
android-0.200.5
android-0.200.8
android-0.202.0
android-0.202.3
android-0.202.4
android-0.218.0
android-0.220.0
extension-2.*
extension-2.8.9
v1.*
v1.4.2-10

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-82454.json"