Vulnerability-Lookup

CVE-2026-89090 (GCVE-0-2026-89090)

Vulnerability from cvelistv5 – Published: 2026-09-11 17:03 – Updated: 2026-09-11 19:20

Title

Denial of service in the event stream header decoder in AWS SDK for Go v2

Summary

An unrecovered panic in the event stream header decoder in Amazon AWS SDK for Go v2 before release-2026-03-23 might allow an unauthenticated remote actor to terminate the consuming application process via a crafted event stream response frame containing a header value type outside the valid range. To remediate this issue, users should upgrade to release-2026-03-23 or later, and patch any forked or derivative code.

Severity

5.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

8.2 (High)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-11 19:19 UTC

CWE

CWE-248 - Uncaught exception

Assigner

AMZN mitre root

References

3 references

URL	Tags
https://github.com/aws/aws-sdk-go-v2/security/adv…	third-party-advisory
https://github.com/aws/aws-sdk-go-v2/releases/tag…	patch
https://aws.amazon.com/security/security-bulletin…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
AWS	AWS SDK for Go v2	Affected: 0 , < 2026-03-23 (custom) cpe:2.3:a:aws:aws_sdk_for_go_v2::::::::

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-89090

Vulnerability from fkie_nvd - Published: 2026-09-11 18:17 - Updated: 2026-09-11 20:19

Severity

5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	ff89ba41-3aa1-4d27-914a-91399e9639e5	https://aws.amazon.com/security/security-bulletins/2026-110-aws/
	ff89ba41-3aa1-4d27-914a-91399e9639e5	https://github.com/aws/aws-sdk-go-v2/releases/tag/release-2026-03-23
	ff89ba41-3aa1-4d27-914a-91399e9639e5	https://github.com/aws/aws-sdk-go-v2/security/advisories/GHSA-xmrv-pmrh-hhx2

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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  "references": [
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "url": "https://aws.amazon.com/security/security-bulletins/2026-110-aws/"
    },
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "url": "https://github.com/aws/aws-sdk-go-v2/releases/tag/release-2026-03-23"
    },
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "url": "https://github.com/aws/aws-sdk-go-v2/security/advisories/GHSA-xmrv-pmrh-hhx2"
    }
  ],
  "sourceIdentifier": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-248"
        }
      ],
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "type": "Secondary"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-89090 (GCVE-0-2026-89090)

FKIE_CVE-2026-89090

Tags

Sightings

Nomenclature