# CVE-2026-81849: amazon-ssm-agent: Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-81849: 	Improper...

CVE-2026-81849 is fixed in amazon-ssm-agent on 1 platform by ALAS2023-2026-1813 (version 3.3.4515.0-1.amzn2023), released June 8, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-81849
- Priority: High
- CVSS: n/a (important)
- EPSS: 0.0090
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 8, 2026

## Description

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-81849: 	Improper limitation of a pathname to a restricted directory in the aws:downloadContent plugin in amazon-ssm-agent before 3.3.4515.0 might allow an authenticated remote user whose ssm:SendCommand permission is restricted to the AWS-DownloadContent document, to write arbitrary files outside the intended download directory with root privileges, via crafted object keys in the S3 source the document is directed to retrieve. This issue may lead to arbitrary code execution as root if specific sensitive files are overwritten.    To remediate this issue, customers should upgrade amazon-ssm-agent to version 3.3.4515.0 or later.  CVE-2026-33814: 	When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | amazon-ssm-agent amzn 2023 | 3.3.4515.0-1.amzn2023 | [ALAS2023-2026-1813](https://patchblox.com/security/data/fix/linux/alas2023-2026-1813.md) | Jun 8, 2026 |

---

Data as of 2026-11-09T13:31:49Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.