Vulnerability · Published Oct 16, 2026 · Assigned by VulnCheck

CVE-2026-111612netdisk-fast-download through 0.4.8 Credential Disclosure via /v2/randomAuth

High 7.5

In plain English

A high-severity security flaw in netdisk-fast-download from qaiu. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.5%top 58.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

netdisk-fast-download through 0.4.8 contains an information disclosure vulnerability that allows unauthenticated attackers to retrieve donated netdisk credentials via the /v2/randomAuth endpoint in ParserApi. Attackers can repeatedly call the endpoint and decrypt the encryptedAuth blob using the hard-coded AES key nfd_auth_key2026 to recover other users' cloud-drive cookies, tokens, or passwords.

Affected products (as reported)

Vendor	Product	Versions
qaiu	netdisk-fast-download	0 – through 0.4.8

Weakness: CWE-321 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

https://hackmd.io/@hieuPenguinnn/netdisk-fast-download-randomauth-donated-credential-disclosure third-party-advisory
https://github.com/qaiu/netdisk-fast-download/blob/v0.4.8/web-service/src/main/java/cn/qaiu/lz/web/controller/ParserApi.java#L738-L752 technical-description
https://github.com/qaiu/netdisk-fast-download/blob/v0.4.8/web-service/src/main/java/cn/qaiu/lz/common/util/AuthParamCodec.java#L31 technical-description
https://github.com/qaiu/netdisk-fast-download product
VulnCheck Advisory: netdisk-fast-download through 0.4.8 Credential Disclosure via /v2/randomAuth third-party-advisory