# Pillow: Bundled libopenjp2 2.5.4 in all wheels since 11.1.0 carries OSV-2025-219 heap-buffer-overflow write reachable from Image.open().load()

Advisory record · `GHSA-78g4-xqwv-q3g8`

- **Identifiers:** `GHSA-78g4-xqwv-q3g8`
- **State:** Confirmed
- **Severity:** CVSS 8.1 High
- **Critical:** No
- **Weakness (CWE):** [CWE-787](https://cwe.mitre.org/data/definitions/787.html) · [CWE-1395](https://cwe.mitre.org/data/definitions/1395.html)
- **Tags:** [Memory corruption](https://agentprime.io/advisories/tag/memory-corruption.md) · [CWE-1395](https://agentprime.io/advisories/tag/cwe-1395.md)
- **Published:** 22 Oct 2026
- **Updated:** 22 Oct 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 22 Oct 2026, 17:01 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `pillow` (PyPI): affected `>=11.1.0, <13.0.0`; fixed in `13.0.0`

## 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:H/PR:N/UI:N/S:U/C:H/I:H/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** No score.

## Timeline

- 31 Oct 2026, 14:08 UTC: First seen by agentprime
- 31 Oct 2026, 14:08 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-78g4-xqwv-q3g8)

## Sources

- [GitHub Advisory Database: GHSA-78g4-xqwv-q3g8](https://github.com/advisories/GHSA-78g4-xqwv-q3g8)
- [OSV: GHSA-78g4-xqwv-q3g8](https://osv.dev/vulnerability/GHSA-78g4-xqwv-q3g8)
- <https://github.com/python-pillow/Pillow/security/advisories/GHSA-78g4-xqwv-q3g8>
- <https://github.com/python-pillow/Pillow/commit/5f8114c8096b181fae493543cd3837d9f9a971cc>
- <https://github.com/python-pillow/Pillow/commit/d3470c327840f4c216a1610f30e7091dfd0b97c0>
- <https://github.com/uclouvain/openjpeg/commit/91d08b11a72764f6d199f32fa0c1b1abd4edc2ad>
- <https://github.com/python-pillow/Pillow>
- <https://github.com/python-pillow/Pillow/releases/tag/13.0.0>
- <https://osv.dev/vulnerability/OSV-2025-219>

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-78g4-xqwv-q3g8>, 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-78g4-xqwv-q3g8/>. Everything for agents: <https://agentprime.io/llms.txt>.