# CVE-2023-49087: Validation of SignedInfo

Source: https://junglewise.ai/threats/cve-2023-49087-validation-of-signedinfo  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-11-28  
License: CC BY 4.0 with a link back

CVE-2023-49087 · Severity: low · CVSS 3.1 · Published 2023-11-28

Validation of SignedInfo

Technologies: [simplesamlphp/saml2 (Packagist)](https://junglewise.ai/threats/technologies/simplesamlphp-saml2). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2023-49087 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-49087 being exploited in the wild.

**How severe is CVE-2023-49087?** Low severity, with a CVSS score of 3.1, published 28 November 2023.

**Which products and versions are affected?** simplesamlphp/saml2 (Packagist) ECOSYSTEM:introduced=5.0.0-alpha.12,fixed=5.0.0-alpha.13; simplesamlphp/xml-security (Packagist) ECOSYSTEM:introduced=1.6.11,fixed=1.6.12.

**Is there a fix for CVE-2023-49087?** Yes. simplesamlphp/saml2 (Packagist): upgrade to 5.0.0-alpha.13 or later; simplesamlphp/xml-security (Packagist): upgrade to 1.6.12 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2023-49087?** Check whether you run simplesamlphp/saml2 (Packagist) or 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/saml2 (Packagist): upgrade to 5.0.0-alpha.13 or later

  ```sh
  composer require simplesamlphp/saml2:^5.0.0-alpha.13
  ```

- simplesamlphp/xml-security (Packagist): upgrade to 1.6.12 or later

  ```sh
  composer require simplesamlphp/xml-security:^1.6.12
  ```


## Affected products

- simplesamlphp/saml2 (Packagist) ECOSYSTEM:introduced=5.0.0-alpha.12,fixed=5.0.0-alpha.13
- simplesamlphp/xml-security (Packagist) ECOSYSTEM:introduced=1.6.11,fixed=1.6.12

## Identifiers

- CVE-2023-49087
- GHSA-ww7x-3gxh-qm6r

## Related threats

- [SimpleSAMLphp saml2 Denial of Service via XPath Transform](https://junglewise.ai/threats/cve-2026-49289-simplesamlphp-saml2-denial-of-service-via-xpath-transform)
- [SimpleSAMLphp saml2 authentication bypass via TLS validator confusion](https://junglewise.ai/threats/cve-2026-49283-simplesamlphp-saml2-authentication-bypass-via-tls-validator)
- [simplesamlphp/xml-security: Missing AES-GCM Authentication Tag Validation on Encrypted Nodes Allows for Unauthorized Decryption](https://junglewise.ai/threats/cve-2026-32600-simplesamlphp-xml-security-missing-aes-gcm-authentication-tag)
- [The SimpleSAMLphp SAML2 library incorrectly verifies signatures for HTTP-Redirect binding](https://junglewise.ai/threats/cve-2025-27773-the-simplesamlphp-saml2-library-incorrectly-verifies-signatures)
- [SimpleSAMLphp SAML2 has an XXE in parsing SAML messages](https://junglewise.ai/threats/cve-2024-52806-simplesamlphp-saml2-has-an-xxe-in-parsing-saml-messages)