# Koillection has an authenticated Server-Side Request Forgery issue

Advisory record · `GHSA-gmxh-hjfv-qc2w`

- **Identifiers:** `GHSA-gmxh-hjfv-qc2w` · `CVE-2026-50888` · `PKSA-r52z-frv4-qfxy`
- **State:** Confirmed
- **Severity:** CVSS 8.1 High
- **Critical:** No
- **Weakness (CWE):** [CWE-918](https://cwe.mitre.org/data/definitions/918.html)
- **Tags:** [Server-side request forgery (SSRF)](https://agentprime.io/advisories/tag/ssrf.md)
- **Published:** 15 Jun 2026
- **Updated:** 27 Aug 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 15 Jun 2026, 21:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `koillection/koillection` (Packagist): affected `<1.8.4`; fixed in `1.8.4`

## Machine-written summary

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

> Koillection, a Packagist package (koillection/koillection), is vulnerable to authenticated Server-Side Request Forgery in its custom scraper subsystem, as stated for version 1.8.0; the affected range given is versions before 1.8.4. An attacker with a logged-in account can supply a crafted URL to make the server request internal resources, allowing them to scan the internal network. Upgrade to version 1.8.4, which is the fixed release.

Written 31 Oct 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

- 8.1 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.0025, the 16th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:07 UTC: First seen by agentprime
- 31 Oct 2026, 14:07 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-gmxh-hjfv-qc2w)

## Sources

- [GitHub Advisory Database: GHSA-gmxh-hjfv-qc2w](https://github.com/advisories/GHSA-gmxh-hjfv-qc2w)
- [OSV: GHSA-gmxh-hjfv-qc2w](https://osv.dev/vulnerability/GHSA-gmxh-hjfv-qc2w)
- <https://nvd.nist.gov/vuln/detail/CVE-2026-50888>
- <https://github.com/benjaminjonard/koillection/pull/1599>
- <https://github.com/benjaminjonard/koillection/commit/4d445e21c631c26070f19fe8ec086a2939767ae0>
- <https://gist.github.com/pyuysig/d60273c1c346257ceddbf8da7134bae7>
- <https://github.com/benjaminjonard/koillection>
- <https://github.com/benjaminjonard/koillection/releases/tag/1.8.4>

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-gmxh-hjfv-qc2w>, 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-gmxh-hjfv-qc2w/>. Everything for agents: <https://agentprime.io/llms.txt>.