CVE-2026-115413 - AWS API MCP Server OAuth token audience validation bypass
CVE-2026-115413
Summary
Bulletin ID: 2026-098-AWS
Scope: AWS
Content Type: Important (requires attention)
Publication Date: 09/04/2026 10:30 AM PDT
Description:
log4j-cve-2021-44228-hotpatch is a tool which injects a Java agent into a running JVM process. The agent will attempt to patch the lookup() method of all loaded org.apache.logging.log4j.core.lookup.JndiLookup instances to unconditionally return the string "Patched JndiLookup::lookup()". It is designed to address the CVE-2021-44228 remote code execution issue in Log4j without restarting the Java process.
We identified CVE-2026-85656, an OS command injection issue in the log4j-cve-2021-44228-hotpatch package in Amazon Linux before 1.3-9.amzn2 might allow a local user to execute arbitrary commands with root privileges via a Java process whose executable path contains embedded newline characters.
Impacted versions: <=1.3-8.amzn2
Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.
Products covered
A separate affected-products list was not included in the collected bulletin.
Remediation
The agent will attempt to patch the lookup() method of all loaded org.apache.logging.log4j.core.lookup.JndiLookup instances to unconditionally return the string "Patched JndiLookup::lookup()".
CVEs in this advisory 2
Update history
What changed in later vendor updates
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- The vendor changed the advisory's last-updated date.
- The vendor changed the advisory's last-updated date.
Updates
- Added to SecurityAlert
We collected the advisory from the official source.
- Published by AWS
The publication date reported by the vendor.
- Confirmed at the source
Our collector saw this advisory during a later source check.