Vulnerability · Published Oct 19, 2026 · Assigned by GitHub_M
CVE-2026-112900Pillow: Argument Injection in Ghostscript call, potentially leading into RCE
Critical 9.2
In plain English
A critical-severity OS command injection in Pillow from python-pillow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 71% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
Pillow is a Python imaging library. From 2.6.0 until 13.0.0, Pillow is vulnerable to argument injection when invoking Ghostscript for EPS input. EpsImagePlugin.Ghostscript passes a caller-controlled input filename after -f without converting it to a safe absolute path, so a name beginning with a hyphen can be interpreted as a Ghostscript option. An attacker who controls the filename can inject Ghostscript arguments. Arbitrary command execution specifically requires a leading @ argument-file filename and control of the referenced text file containing additional Ghostscript arguments; the reported chain reproduces with the default -dSAFER invocation. This issue is fixed in version 13.0.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | python3-pillow | 5.1.1-36.el8_10 | ALSA-2026:93077 |
| AlmaLinux:8 | python3-pillow-devel | 5.1.1-36.el8_10 | ALSA-2026:93077 |
| AlmaLinux:8 | python3-pillow-doc | 5.1.1-36.el8_10 | ALSA-2026:93077 |
| AlmaLinux:8 | python3-pillow-tk | 5.1.1-36.el8_10 | ALSA-2026:93077 |
| Debian:12 | pillow | no fix listed | DEBIAN-CVE-2026-112900 |
| Debian:13 | pillow | no fix listed | DEBIAN-CVE-2026-112900 |
| Debian:14 | pillow | no fix listed | DEBIAN-CVE-2026-112900 |
| PyPI | pillow | 13.0.0 | GHSA-w889-685w-c8fh |
| Rocky Linux:8 | python-pillow | 0:5.1.1-36.el8_10 | RLSA-2026:93077 |
| Ubuntu:22.04:LTS | pillow | no fix listed | UBUNTU-CVE-2026-112900 |
| Ubuntu:24.04:LTS | pillow | no fix listed | UBUNTU-CVE-2026-112900 |
| Ubuntu:26.04:LTS | pillow | no fix listed | UBUNTU-CVE-2026-112900 |
| Ubuntu:26.10 | pillow | no fix listed | UBUNTU-CVE-2026-112900 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| python-pillow | Pillow | >= 2.6.0, < 13.0.0 |
Weakness: CWE-78, CWE-88 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N