CVE-2026-111367

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Source
https://cve.org/CVERecord?id=CVE-2026-111367
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111367.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-111367
Published
2026-10-15T21:43:50Z
Modified
2026-10-17T02:48:26Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
BillionMail through 4.9 Forgeable JWTs via Default Signing Key
Details

BillionMail through 4.9 contains a hard-coded cryptographic key vulnerability that allows unauthenticated attackers to forge unsubscribe and subscribe-confirm JWTs by computing the key from shipped configuration constants. Attackers can submit forged tokens to /api/unsubscribe, /api/unsubscribe_new, or /api/subscribe/confirm to deactivate any contact or force confirmed subscriptions.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-1394"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111367.json"
}
References

Affected packages

Git / github.com/Billionmail/BillionMail

Affected ranges

Type
GIT
Repo
https://github.com/Billionmail/BillionMail
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
8050523d2786cde0204736eaadd0d540b73e761a
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "last_affected":  "4.9"
        },
        {
            "fixed":  "4.9"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

V0.*
V0.01
v4.*
v4.8

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111367.json"