CVE-2026-89090 - Denial of service in the event stream header decoder in AWS SDK for Go v2
Cybersecurity Classified by Officially
CVE-2026-89090 - Denial of service in the event stream header decoder in AWS SDK for Go v2
Bulletin ID: 2026-110-AWS
Scope: AWS
Content Type: Important (requires attention)
Publication Date: 09/11/2026 10:00 AM PDT
An issue exists in the the EventStream header decoder in AWS SDK for Go v2 in versions predating 2026-03-23. An actor can send a malformed EventStream response frame containing a crafted header value type byte outside the valid range, which can cause the host process to terminate.
This issue has been addressed in versions 2026-03-23 and above. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.
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Read the original at the source: https://aws.amazon.com/security/security-bulletins/rss/2026-110-aws/
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Provenance
- Organization
- Amazon Web Services — imported from official source
- Official source
- https://aws.amazon.com/security/security-bulletins/feed/ RSS
- Imported
- September 15, 2026 20:57
- Versions
- 1 recorded
- Identity
fcb543a35cb39751806398f87b68941193545749