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CVE-2026-87912VulnerabilityPublished

CVE-2026-87912: AWS Security Agent plugin · Unverified ownership

Affects AWS Security Agent pluginSource CVE Database V5

0

Not known to be exploited · CVSS 5.9 Medium : upgrade to 1.1.0 when convenient.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
5.9Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 38% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.1.0
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

Upgrade aws/agent-toolkit-for-aws to 1.1.0.

Affected software

ProductAffectedFixed in
AWSAWS Security Agent pluginAffected
  • =1.0.0
Fixed in–
GitHubaws/agent-toolkit-for-awspkg:github/aws/agent-toolkit-for-awsOther threatsAffected
  • <1.1.0
Fixed in
  • 1.1.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade the AWS Security Agent plugin to version 1.1.0 or later, which includes the fix for this vulnerability. Additionally, verify that the scan output S3 bucket in your AWS account is owned by your account, as upgrading does not automatically release bucket names that may have been registered by third parties.

Description

CVE-2026-87912 is a vulnerability in the AWS Security Agent plugin before version 1.1.0 where missing verification of S3 bucket ownership could allow remote attackers to access private source archives of scanned workspaces. These archives may contain sensitive credentials and infrastructure state. The issue arises from the use of a pre-registered storage bucket named based on a publicly known account identifier. AWS has released version 1.1.0 to address this vulnerability. Users must also verify that their scan output buckets are owned by their own accounts, as upgrading does not reclaim bucket names already registered by third parties.

Reports on CVE-2026-87912

References

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