Description
AWS SDK for PHP is the Amazon Web Services software development kit for PHP. Within the scope of requests to S3 object keys and/or prefixes containing a Unix double-dot, a URI path traversal is possible. The issue exists in the `buildEndpoint` method in the RestSerializer component of the AWS SDK for PHP v3 prior to 3.288.1. The `buildEndpoint` method relies on the Guzzle Psr7 UriResolver utility, which strips dot segments from the request path in accordance with RFC 3986. Under certain conditions, this could lead to an arbitrary object being accessed. This issue has been patched in version 3.288.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| aws | aws-sdk-php | >= 3.0.0, < 3.288.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | aws-sdk-for-php | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/beam-cloud/beta9 | <= 0.0.0-20260116162221-c1cd75e813cf | — | GHSA-73jg-4qh6-3f4g |
| Go | github.com/beam-cloud/beta9 | all versions | — | GO-2026-4390 |
| Packagist | aws/aws-sdk-php | < 3.288.1 | 3.288.1 | GHSA-557v-xcg6-rm5m |