# CVE-2026-32600: simplesamlphp/xml-security: Missing AES-GCM Authentication Tag Validation on Encrypted Nodes Allows for Unauthorized Decryption

Source: https://junglewise.ai/threats/cve-2026-32600-simplesamlphp-xml-security-missing-aes-gcm-authentication-tag  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-13  
License: CC BY 4.0 with a link back

CVE-2026-32600 · Severity: low · CVSS 3.1 · Published 2026-03-13

simplesamlphp/xml-security: Missing AES-GCM Authentication Tag Validation on Encrypted Nodes Allows for Unauthorized Decryption

Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2026-32600 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-32600 being exploited in the wild.

**How severe is CVE-2026-32600?** Low severity, with a CVSS score of 3.1, published 13 March 2026.

**Which products and versions are affected?** simplesamlphp/xml-security (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.3.1.

**Is there a fix for CVE-2026-32600?** Yes. simplesamlphp/xml-security (Packagist): upgrade to 2.3.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-32600?** Check whether you run simplesamlphp/xml-security (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- simplesamlphp/xml-security (Packagist): upgrade to 2.3.1 or later

  ```sh
  composer require simplesamlphp/xml-security:^2.3.1
  ```


## Affected products

- simplesamlphp/xml-security (Packagist) ECOSYSTEM:introduced=2.0.0,fixed=2.3.1

## Identifiers

- CVE-2026-32600
- GHSA-r353-4845-pr5p

## Related threats

- [Validation of SignedInfo](https://junglewise.ai/threats/cve-2023-49087-validation-of-signedinfo)