CVE-2026-4219Public exploit

Backend credential disclosure via embedded BuildConfig constants

Published Mar 16, 2026 · Updated Mar 16, 2026

Hard-coded credentials in YWF | BPOF | APGCS 1.0.0 through 1.0.2 allow local users to read backend secrets from the Android app. The app packages ACCESS_KEY and HASH_KEY constants in com/index/event/BuildConfig.java, exposing reusable authorization values through local APK inspection. Low-privileged local access is required; disclosure is limited to credential confidentiality, with no reported data modification or service interruption.

CVSS severity3.3
Low
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded credentials in YWF | BPOF | APGCS 1.0.0 through 1.0.2 allow local users to read backend secrets from the Android app. The app packages ACCESS_KEY and HASH_KEY constants in com/index/event/BuildConfig.java, exposing reusable authorization values through local APK inspection. Low-privileged local access is required; disclosure is limited to credential confidentiality, with no reported data modification or service interruption.

The record

CVE
CVE-2026-4219
Published
Mar 16, 2026
Updated
Mar 16, 2026
Vendor
INDEX Conferences & Exhibitions Organization L.L.C.
Product
YWF | BPOF | APGCS
Classifications
CWE-259, CWE-798, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0
  2. Affected versionversion=1.0.1
  3. Affected versionversion=1.0.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

INDEX Conferences & Exhibitions Organization L.L.C. · YWF | BPOF | APGCSversion=1.0.0; version=1.0.1; version=1.0.2

Published CVSS scores

1.7VulDBAV:L/AC:L/Au:S/C:P/I:N/A:N
1.9VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-259Use of Hard-coded Password
CWE-798Use of Hard-coded Credentials
T1552.001Credentials In Files

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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