Express Gateway through 1.16.11 Hardcoded Default cipherKey Exposes OAuth Tokens (ExpressGateway express-gateway)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.32 % · percentile 25 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- VulnCheck
- NVD status
- Awaiting Analysis
Description
Express Gateway through 1.16.11 contains a hardcoded cryptographic key vulnerability that allows attackers with datastore access to decrypt stored OAuth 2.0 token secrets via the default crypto.cipherKey 'sensitiveKey'. Attackers who can read Redis can decrypt tokenEncrypted values and combine them with stored token IDs to obtain valid bearer tokens for any user.
Weaknesses (CWE)
- CWE-1394 — Use of Default Cryptographic Key
References
- https://github.com/ExpressGateway/express-gateway/issues/1078
- https://github.com/ExpressGateway/express-gateway
- https://github.com/ExpressGateway/express-gateway/blob/45612814d12f65889ef3bdf80b2ed7ab9b557736/lib/config/system.config.yml#L15-L22
- https://github.com/ExpressGateway/express-gateway/blob/45612814d12f65889ef3bdf80b2ed7ab9b557736/lib/services/utils.js#L18-L28
- https://www.vulncheck.com/advisories/express-gateway-through-1.16.11-hardcoded-default-cipherkey-exposes-oauth-tokens
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | HIGH 7.4 | CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| CVSS 3.1 | MEDIUM 5.9 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N | VulnCheck |
| CVSS 4.0 | HIGH 7.4 | CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/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 | NVD · disclosure@vulncheck.com (Secondary) |
| CVSS 3.1 | MEDIUM 5.9 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N | NVD · disclosure@vulncheck.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-94317
- GCVE · GCVE-0-2026-107177
Affected products
| Product | Versions |
|---|---|
| ExpressGateway · express-gateway | affected 0 ≤ 1.16.11 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |