CVE-2026-19643

Description

An out-of-bounds read issue in the Base64 decoder in Amazon aws-sdk-cpp before 1.11.862, on some platforms, might allow a remote authenticated user to crash an application that processes crafted Base64-encoded input. To remediate this issue, users should upgrade to version 1.11.862.

CVSS Vector

References

• https://aws.amazon.com/security/security-bulletins/2026-080-aws/
• https://github.com/aws/aws-sdk-cpp/releases/tag/1.11.862
• https://github.com/aws/aws-sdk-cpp/security/advisories/GHSA-mxm9-xpf9-x66x