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CVE-2026-9155

OS Command Injection in Rapid7 InsightConnect Sed Plugin via expression parameter.

OS Command Injection vulnerability in Rapid7 InsightConnect Sed Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via the expression parameter due to insufficient input validation.

CVSS 3.1 · 8.8 High EPSS 1.6% KEV · Not listed
Vendors
Gnu Linux Rapid7
Products
Sed Linux Kernel Insightconnect Sed Plugin
CVE-2026-9154

Arbitrary File Write in Rapid7 InsightConnect Sed Plugin

Arbitrary File Write vulnerability in Rapid7 InsightConnect Sed Plugin on Linux allows authenticated attackers to write attacker-controlled content to arbitrary file paths via the expression parameter.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Gnu Linux Rapid7
Products
Sed Linux Kernel Insightconnect Sed Plugin
CVE-2026-9153

Arbitrary File Read in Rapid7 InsightConnect Sed Plugin

Arbitrary File Read vulnerability in Rapid7 InsightConnect Sed Plugin on Linux allows authenticated attackers to read arbitrary files via the expression parameter due to insufficient input validation.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Gnu Linux Rapid7
Products
Sed Linux Kernel Insightconnect Sed Plugin
CVE-2026-5958

Race Condition in GNU Sed

When sed is invoked with both -i (in-place edit) and --follow-symlinks, the function open_next_file() performs two separate, non-atomic filesystem operations on the same path: 1. resolves symlink to its target and stores the resolved path for determining when output is written, 2. opens the original symlink path (not the resolved one) to read the file. Between these two calls there is a race window. If an attacker atomically replaces the symlink with a different target during that window, sed will: read content from the new (attacker-chosen) symlink target and write the processed result to the path recorded in step 1. This can lead to arbitrary file overwrite with attacker-controlled content in the context of the sed process. This issue was fixed in version 4.10.

CVSS 4.0 · 2.1 Low EPSS < 1% KEV · Not listed
Vendors
Gnu
Products
Sed