# Microweber missing standardized error handling mechanism

Advisory record · `GHSA-9r6p-hg4g-5gxp`

- **Identifiers:** `GHSA-9r6p-hg4g-5gxp` · `CVE-2023-6599` · `PKSA-3c1q-3392-wkmp`
- **State:** Confirmed
- **Severity:** CVSS 3.1 Low
- **Critical:** No
- **Weakness (CWE):** [CWE-544](https://cwe.mitre.org/data/definitions/544.html) · [CWE-755](https://cwe.mitre.org/data/definitions/755.html)
- **Tags:** [CWE-544](https://agentprime.io/advisories/tag/cwe-544.md) · [CWE-755](https://agentprime.io/advisories/tag/cwe-755.md)
- **Published:** 8 Dec 2023
- **Updated:** 16 Feb 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 8 Dec 2023, 00:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `microweber/microweber` (Packagist): affected `<2.0.0`; fixed in `2.0.0`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Microweber versions before 2.0.0 are affected by a missing standardized error handling mechanism. The source gives few details about how this could be exploited or what impact it has. Upgrade microweber/microweber to 2.0.0 or later.

Written 4 Nov 2026.

## 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

- 3.1 Low, CVSS 3.0: `CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N`, from CNA (@huntr_ai)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0049, the 42nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:31 UTC: First seen by agentprime
- 31 Oct 2026, 14:31 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-9r6p-hg4g-5gxp)

## Sources

- [GitHub Advisory Database: GHSA-9r6p-hg4g-5gxp](https://github.com/advisories/GHSA-9r6p-hg4g-5gxp)
- [OSV: GHSA-9r6p-hg4g-5gxp](https://osv.dev/vulnerability/GHSA-9r6p-hg4g-5gxp)
- <https://nvd.nist.gov/vuln/detail/CVE-2023-6599>
- <https://github.com/microweber/microweber/commit/f7eb9e1c6e801346f07f3b0164a01ac5f2ca5cfd>
- <https://github.com/microweber/microweber>
- <https://huntr.com/bounties/6198785c-bf60-422e-9b80-68a6e658a10e>

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-9r6p-hg4g-5gxp>, 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-9r6p-hg4g-5gxp/>. Everything for agents: <https://agentprime.io/llms.txt>.