CVE-2026-11521Public exploitNetwork attack vector

Unauthorized balance changes via unauthenticated transaction endpoints

Published Jun 8, 2026 · Updated Jun 8, 2026

Improper authorization in Mohammed-eid35 bank-management-system-springboot allows remote attackers to alter account balances. SecurityConfiguration permits /transaction/** without authentication, while TransactionController processes supplied card identifiers without verifying the current user or account ownership. A valid card number enables deposits; withdrawals also require the CVV, and successful requests directly change the target balance.

CVSS severityUnavailable
Unscored
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Improper authorization in Mohammed-eid35 bank-management-system-springboot allows remote attackers to alter account balances. SecurityConfiguration permits /transaction/** without authentication, while TransactionController processes supplied card identifiers without verifying the current user or account ownership. A valid card number enables deposits; withdrawals also require the CVV, and successful requests directly change the target balance.

The record

CVE
CVE-2026-11521
Published
Jun 8, 2026
Updated
Jun 8, 2026
Vendor
Mohammed-eid35
Product
bank-management-system-springboot
Classifications
CWE-266, CWE-285, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 8, 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=7b9bcc65ad7df3db29af71aed9bb500e5f24d948

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mohammed-eid35 · bank-management-system-springbootversion=7b9bcc65ad7df3db29af71aed9bb500e5f24d948

Published CVSS scores

6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
CWE-285Improper Authorization
T1190Exploit Public-Facing Application

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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