# Pillow: EPS load(scale) lets Ghostscript render past the decompression bomb limit

Advisory record · `GHSA-vx6w-vv9f-6gvg`

- **Identifiers:** `GHSA-vx6w-vv9f-6gvg` · `CVE-2026-112899`
- **State:** Confirmed
- **Severity:** CVSS 6.3 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-770](https://cwe.mitre.org/data/definitions/770.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Published:** 20 Oct 2026
- **Updated:** 20 Oct 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 20 Oct 2026, 20:53 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `pillow` (PyPI): affected `>=2.3.0, <13.0.0`; fixed in `13.0.0`

## Machine-written summary

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

> Pillow versions from 2.3.0 before 13.0.0 are affected. When an application renders an untrusted EPS file with load(scale=N) for N greater than 1, Pillow only checks the decompression bomb limit on the unscaled size, so Ghostscript can render and write a temporary file several times larger than the configured limit. An attacker who can supply a small EPS file can make each request use N² times the intended Ghostscript CPU and temporary disk space. Upgrade to Pillow 13.0.0, which fixes the issue.

Written 1 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0054, the 45th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 17 Oct 2026, 10:38 UTC: [Published by the maintainers as a GitHub repository advisory](https://github.com/python-pillow/Pillow/security/advisories/GHSA-vx6w-vv9f-6gvg)
- 31 Oct 2026, 14:08 UTC: First seen by agentprime
- 31 Oct 2026, 14:08 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-vx6w-vv9f-6gvg)
- 5 Nov 2026, 20:35 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2026-112899)
- 5 Nov 2026, 21:18 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-112899)

## Sources

- [GitHub Advisory Database: GHSA-vx6w-vv9f-6gvg](https://github.com/advisories/GHSA-vx6w-vv9f-6gvg)
- [OSV: GHSA-vx6w-vv9f-6gvg](https://osv.dev/vulnerability/GHSA-vx6w-vv9f-6gvg)
- <https://github.com/python-pillow/Pillow/security/advisories/GHSA-vx6w-vv9f-6gvg>
- <https://github.com/python-pillow/Pillow/commit/3e8cc105588d1dfe062fcada0b6058c1b5f14b65>
- <https://github.com/python-pillow/Pillow>
- <https://github.com/python-pillow/Pillow/releases/tag/13.0.0>

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-vx6w-vv9f-6gvg>, 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-vx6w-vv9f-6gvg/>. Everything for agents: <https://agentprime.io/llms.txt>.