CVE-2026-15557Public exploitNetwork attack vector

Unauthenticated user impersonation via trusted internal headers

Published Jul 13, 2026 · Updated Jul 13, 2026

Improper authentication in waooAI waoowaoo 0.4.0 through 0.4.1 allows remote attackers to impersonate users via internal headers. getInternalTaskSession constructs session.user.id from x-internal-user-id when the task token matches, or without a token outside production, and callers trust that identity. The attacker needs a target UUID plus a missing token in a non-production deployment or the public default token, enabling authenticated API access and user-data changes.

CVSS severity7.3
High
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in waooAI waoowaoo 0.4.0 through 0.4.1 allows remote attackers to impersonate users via internal headers. getInternalTaskSession constructs session.user.id from x-internal-user-id when the task token matches, or without a token outside production, and callers trust that identity. The attacker needs a target UUID plus a missing token in a non-production deployment or the public default token, enabling authenticated API access and user-data changes.

The record

CVE
CVE-2026-15557
Published
Jul 13, 2026
Updated
Jul 13, 2026
Vendor
waooAI
Product
waoowaoo
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 13, 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=0.4.0
  2. Affected versionversion=0.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

waooAI · waoowaooversion=0.4.0; version=0.4.1

Published CVSS scores

7.5VulDB CNAAV:N/AC:L/Au:N/C:P/I:P/A:P
7.3VulDB CNACVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
6.9VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
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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