CVE-2026-39349Network attack vector

Pattern disclosure via AES-ECB field encryption

Published Apr 7, 2026 · Updated Apr 7, 2026

Cryptographic weakness in OrangeHRM Starter 5.0 through 5.8 allows remote authenticated users to infer patterns in stored sensitive data. The application encrypts certain sensitive fields with AES in ECB mode, so identical block-aligned plaintext blocks produce repeating ciphertext patterns. The public advisory does not name the fields or encryption routine; exploitation requires high privileges and favorable data conditions, and the impact is limited to pattern disclosure.

CVSS severity2.1
Low
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cryptographic weakness in OrangeHRM Starter 5.0 through 5.8 allows remote authenticated users to infer patterns in stored sensitive data. The application encrypts certain sensitive fields with AES in ECB mode, so identical block-aligned plaintext blocks produce repeating ciphertext patterns. The public advisory does not name the fields or encryption routine; exploitation requires high privileges and favorable data conditions, and the impact is limited to pattern disclosure.

The record

CVE
CVE-2026-39349
Published
Apr 7, 2026
Updated
Apr 7, 2026
Vendor
OrangeHRM Inc.
Product
OrangeHRM Starter
Classifications
CWE-326
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 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=>= 5.0, < 5.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OrangeHRM Inc. · OrangeHRM Starterversion=>= 5.0, < 5.8.1

Published CVSS scores

2.7NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
2.1GitHub, Inc.CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA: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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-326Inadequate Encryption Strength

Public exploit references

No public exploit references are available in this record.

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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