# Dompdf vulnerable to URI validation failure on SVG parsing

Advisory record · `GHSA-3cw5-7cxw-v5qg`

- **Identifiers:** `GHSA-3cw5-7cxw-v5qg` · `CVE-2023-23924` · `PKSA-4jrs-y99s-q8j6`
- **State:** Confirmed
- **Severity:** CVSS 10.0 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-551](https://cwe.mitre.org/data/definitions/551.html) · [CWE-863](https://cwe.mitre.org/data/definitions/863.html)
- **Tags:** [Broken access control](https://agentprime.io/advisories/tag/access-control.md) · [CWE-551](https://agentprime.io/advisories/tag/cwe-551.md)
- **Published:** 1 Feb 2023
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 1 Feb 2023, 01:37 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 10.0: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `dompdf/dompdf` (Packagist): affected `<2.0.2`; fixed in `2.0.2`

## 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.036, the 89th percentile, on 6 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-3cw5-7cxw-v5qg)

## Sources

- [GitHub Advisory Database: GHSA-3cw5-7cxw-v5qg](https://github.com/advisories/GHSA-3cw5-7cxw-v5qg)
- [OSV: GHSA-3cw5-7cxw-v5qg](https://osv.dev/vulnerability/GHSA-3cw5-7cxw-v5qg)
- <https://github.com/dompdf/dompdf/security/advisories/GHSA-3cw5-7cxw-v5qg>
- <https://nvd.nist.gov/vuln/detail/CVE-2023-23924>
- <https://github.com/dompdf/dompdf/commit/7558f07f693b2ac3266089f21051e6b78c6a0c85>
- <https://github.com/FriendsOfPHP/security-advisories/blob/master/dompdf/dompdf/CVE-2023-23924.yaml>
- <https://github.com/advisories/GHSA-3cw5-7cxw-v5qg>
- <https://github.com/dompdf/dompdf>
- <https://github.com/dompdf/dompdf/releases/tag/v2.0.2>

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-3cw5-7cxw-v5qg>, 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-3cw5-7cxw-v5qg/>. Everything for agents: <https://agentprime.io/llms.txt>.