# MongoDB: GridFS data disclosure and deletion via query-operator injection in file IDs

Advisory record · `GHSA-8fxw-fmj8-xp7j`

- **Identifiers:** `GHSA-8fxw-fmj8-xp7j` · `CVE-2026-88023` · `PKSA-y93m-jgy6-r9ns`
- **State:** Confirmed
- **Severity:** CVSS 6.1 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-943](https://cwe.mitre.org/data/definitions/943.html)
- **Tags:** [Other injection](https://agentprime.io/advisories/tag/injection.md)
- **Published:** 5 Oct 2026
- **Updated:** 5 Oct 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 5 Oct 2026, 23:26 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `mongodb/mongodb` (Packagist): affected `>=1.1.0, <1.24.5 || >=2.0.0, <2.4.2`; fixed in `1.24.5`, `2.4.2`

## 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

- 6.1 Medium, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N`, from CNA (mongodb)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0033, the 25th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 13:54 UTC: First seen by agentprime
- 31 Oct 2026, 13:54 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-8fxw-fmj8-xp7j)

## Sources

- [GitHub Advisory Database: GHSA-8fxw-fmj8-xp7j](https://github.com/advisories/GHSA-8fxw-fmj8-xp7j)
- [OSV: GHSA-8fxw-fmj8-xp7j](https://osv.dev/vulnerability/GHSA-8fxw-fmj8-xp7j)
- <https://github.com/mongodb/mongo-php-library/security/advisories/GHSA-8fxw-fmj8-xp7j>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-88023>
- <https://github.com/mongodb/mongo-php-library/pull/1981>
- <https://github.com/mongodb/mongo-php-library/commit/8c0b165069ab29d52a80a379a947ac9a55734601>
- <https://github.com/mongodb/mongo-php-library>
- <https://github.com/mongodb/mongo-php-library/releases/tag/1.21.5>
- <https://github.com/mongodb/mongo-php-library/releases/tag/2.4.2>
- <https://jira.mongodb.org/browse/PHPLIB-1929>

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-8fxw-fmj8-xp7j>, 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-8fxw-fmj8-xp7j/>. Everything for agents: <https://agentprime.io/llms.txt>.