# Validation of SignedInfo

Advisory record · `GHSA-ww7x-3gxh-qm6r`

- **Identifiers:** `GHSA-ww7x-3gxh-qm6r` · `CVE-2023-49087` · `PKSA-57qx-v755-bhs3` · `PKSA-c17n-yzdt-bpbs`
- **State:** Confirmed
- **Severity:** CVSS 6.8 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-345](https://cwe.mitre.org/data/definitions/345.html)
- **Tags:** [CWE-345](https://agentprime.io/advisories/tag/cwe-345.md)
- **Published:** 28 Nov 2023
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 28 Nov 2023, 18:52 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `simplesamlphp/xml-security` (Packagist): affected `>=1.6.11, <1.6.12`; fixed in `1.6.12`
- `simplesamlphp/saml2` (Packagist): affected `>=5.0.0-alpha.12, <5.0.0-alpha.13`; fixed in `5.0.0-alpha.13`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 6.8 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0019, the 9th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:04 UTC: First seen by agentprime
- 31 Oct 2026, 14:04 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-ww7x-3gxh-qm6r)

## Sources

- [GitHub Advisory Database: GHSA-ww7x-3gxh-qm6r](https://github.com/advisories/GHSA-ww7x-3gxh-qm6r)
- [OSV: GHSA-ww7x-3gxh-qm6r](https://osv.dev/vulnerability/GHSA-ww7x-3gxh-qm6r)
- <https://github.com/simplesamlphp/xml-security/security/advisories/GHSA-ww7x-3gxh-qm6r>
- <https://nvd.nist.gov/vuln/detail/CVE-2023-49087>
- <https://github.com/simplesamlphp/xml-security/commit/f509e3083dd7870cce5880c804b5122317287581>
- <https://github.com/simplesamlphp/xml-security>
- <https://github.com/simplesamlphp/xml-security/blob/master/src/XML/SignedElementTrait.php>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-ww7x-3gxh-qm6r>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-ww7x-3gxh-qm6r/>. Everything for agents: <https://agentprime.io/llms.txt>.