CVE-2026-87912Network attack vector

Source archive disclosure via predictable S3 bucket

Published Sep 10, 2026 · Updated Sep 10, 2026

Information disclosure in Amazon Web Services AWS Security Agent plugin 1.0.0 allows remote attackers to obtain scanned source archives. The scan skills derive a global S3 bucket name from the caller's public AWS account identifier and Region, then check only for its existence before uploading. An unauthenticated attacker who pre-registers that name receives archives when a user starts a scan, exposing included credentials, private keys, diffs, and infrastructure state.

CVSS severity5.1
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Amazon Web Services AWS Security Agent plugin 1.0.0 allows remote attackers to obtain scanned source archives. The scan skills derive a global S3 bucket name from the caller's public AWS account identifier and Region, then check only for its existence before uploading. An unauthenticated attacker who pre-registers that name receives archives when a user starts a scan, exposing included credentials, private keys, diffs, and infrastructure state.

The record

CVE
CVE-2026-87912
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
Amazon Web Services
Product
AWS Security Agent plugin
Classifications
CWE-341, CWE-283, T1567.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 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

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Amazon Web Services · AWS Security Agent pluginversion=1.0.0

Published CVSS scores

5.1Amazon Web ServicesCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:L/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-341Predictable from Observable State
CWE-283Unverified Ownership
T1567.002Exfiltration to Cloud Storage

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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