Description
Missing cryptographic key commitment in the AWS SDK for PHP may allow a user with write access to the S3 bucket to introduce a new EDK that decrypts to different plaintext when the encrypted data key is stored in an "instruction file" instead of S3's metadata record.
To mitigate this issue, upgrade AWS SDK for PHP to version 3.368.0 or later
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AWS | AWS SDK for PHP | — | 3.368.0 |
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 |
|---|---|---|---|---|
| Packagist | aws/aws-sdk-php | < 3.368.0 | 3.368.0 | GHSA-x8cp-jf6f-r4xh |
Advisories 1
- WID-SEC-2026-0151 TYPO3 Extension: Mehrere Schwachstellen ermöglichen Manipulation von Dateien BSI CERT-Bund (WID) · Jan 20, 2026