Medium severity5.9NVD Advisory· Published Oct 7, 2026
CVE-2026-107177
CVE-2026-107177
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.
Affected products
1- Range: <=1.16.11
Patches
Vulnerability mechanics
References
4- github.com/ExpressGateway/express-gateway/blob/45612814d12f65889ef3bdf80b2ed7ab9b557736/lib/config/system.config.ymlnvd
- github.com/ExpressGateway/express-gateway/blob/45612814d12f65889ef3bdf80b2ed7ab9b557736/lib/services/utils.jsnvd
- github.com/ExpressGateway/express-gateway/issues/1078nvd
- www.vulncheck.com/advisories/express-gateway-through-1.16.11-hardcoded-default-cipherkey-exposes-oauth-tokensnvd
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