Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-92921

CVE-2026-92921MEDIUM

cjbi admin3 — admin3 through 3.0.0 Weak Password Hashing via Single-Round MD5

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   H   N   H   N   N    6.9   .0030   20.8     —

AFFECTED
  Product  Versions     Fixed
  admin3   unspecified  —

TIMELINE
  Sep 17  Reserved by VulnCheck
  Sep 17  Published (CNA: VulnCheck)
  Sep 18  EXPLOIT PUBLISHED — CVE-2026-92921 (cjbi admin3). Public exploit reference added.
  Sep 24  EXPLOIT PUBLISHED — CVE-2026-92921 (cjbi admin3). Public exploit reference added.

CWE-916 · CNA: VulnCheck · CVSS v4.0 · 5 references · NVD status: Deferred

Description

admin3 through 3.0.0 stores account passwords using single-round MD5 with only the username as salt and no key derivation function. Attackers with database access can recover plaintext passwords through offline dictionary or brute-force attacks due to negligible computational effort.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
September 17, 2026	Reserved	Reserved by VulnCheck
September 17, 2026	Published	Published (CNA: VulnCheck)
September 18, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-92921 (cjbi admin3). Public exploit reference added.
September 24, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-92921 (cjbi admin3). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
cjbi	admin3	—	—	—

Weaknesses

CWE-916

References (5)

https://github.com/LinYuanyi1/cve-request-poc/blob/master/admin3/C08_md5_credential_hashing.py [exploit]
https://github.com/cjbi/admin3 [product]
https://github.com/cjbi/admin3/blob/3.0.0/admin3-server/src/main/java/tech/wetech/admin3/common/SecurityUtil.java [technical-description]
https://github.com/cjbi/admin3/blob/3.0.0/admin3-server/src/main/java/tech/wetech/admin3/sys/model/UserCredential.java [technical-description]
https://www.vulncheck.com/advisories/admin3-through-3.0.0-weak-password-hashing-via-single-round-md5 [third-party-advisory]

Authoritative record: CVE-2026-92921 at cve.org

Vendors: cjbi

Weaknesses: CWE-916

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-92921 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.