OS command injection
Input changes a command that the server runs through its operating system.
CWE-78 · NVD record: security-advisories@github.com
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Not on CISA's list.
Published 2026-10-19
9.2 out of 10
CVSS rates it critical: about as damaging as flaws get.
1.3%
Estimated chance of exploitation in the next 30 days, higher than 70% of all scored flaws (EPSS, 2026-10-29).
Not confirmed
It isn't on CISA's list. That doesn't prove nobody uses it: CISA only lists exploitation it has confirmed.
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.
From the NVD.
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Input changes a command that the server runs through its operating system.
CWE-78 · NVD record: security-advisories@github.com
Reading and practice labs · Free account for labs. Basic HTTP knowledge; some labs use Burp Suite.
CWE-88 · NVD record: security-advisories@github.com. We have not selected a close learning match for this label.
CWE is a catalogue of weakness types. Labels come from the sources shown and can differ or change. Resource matches reviewed 16 October 2026.
Exploited flaws from CISA's KEV catalogue. Chance of exploitation from EPSS by FIRST. Descriptions and scores from the NVD. This product uses the NVD API but is not endorsed or certified by the NVD.