CVE-2026-19360Network attack vector

Authenticated AWS access via overprivileged Lambda role

Published Aug 9, 2026 · Updated Aug 9, 2026

Improper privilege management in Cyrus Wong ExcelLexBot 0.0.1 through 0.0.3 allows remote authenticated users to affect AWS resources. The ExcelLexBotS3TriggerFunction execution role combines broad AWS managed policies with wildcard IAM and CloudFormation permissions instead of limiting the handler to required actions and resources. Exploitation requires high privileges and allows limited data access or alteration and service interruption within the role's AWS reach.

CVSS severity5.1
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper privilege management in Cyrus Wong ExcelLexBot 0.0.1 through 0.0.3 allows remote authenticated users to affect AWS resources. The ExcelLexBotS3TriggerFunction execution role combines broad AWS managed policies with wildcard IAM and CloudFormation permissions instead of limiting the handler to required actions and resources. Exploitation requires high privileges and allows limited data access or alteration and service interruption within the role's AWS reach.

The record

CVE
CVE-2026-19360
Published
Aug 9, 2026
Updated
Aug 9, 2026
Vendor
Cyrus Wong
Product
ExcelLexBot
Classifications
CWE-269, CWE-266, T1078.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 9, 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=0.0.1
  2. Affected versionversion=0.0.2
  3. Affected versionversion=0.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Cyrus Wong · ExcelLexBotversion=0.0.1; version=0.0.2; version=0.0.3

Published CVSS scores

5.8VulDBAV:N/AC:L/Au:M/C:P/I:P/A:P
4.7VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
5.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
CWE-266Incorrect Privilege Assignment
T1078.004Valid Accounts: Cloud Accounts

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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