# CVE-2026-9153: Rapid7 InsightConnect Sed Plugin arbitrary file read via expression parameter

Source: https://junglewise.ai/threats/cve-2026-9153-rapid7-insightconnect-sed-plugin-arbitrary-file-read-via  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-25. Updated: 2026-06-25  
License: CC BY 4.0 with a link back

CVE-2026-9153 · Severity: medium · CVSS 6.5 · Published 2026-06-25

A vulnerability in the Rapid7 InsightConnect Sed Plugin for Linux allows authorized users to access files they should not be able to see. This plugin is used for automated text manipulation within security workflows. An attacker with basic access to the system could exploit this flaw to read sensitive configuration files or system data, potentially leading to further unauthorized access or data exposure.

Technologies: [Rapid7 InsightConnect Sed Plugin](https://junglewise.ai/threats/technologies/insightconnect-sed-plugin). Vendors: [Rapid7](https://junglewise.ai/threats/vendors/rapid7).

## Quick answers

**Is CVE-2026-9153 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9153 being exploited in the wild.

**How severe is CVE-2026-9153?** Medium severity, with a CVSS score of 6.5, published 25 June 2026.

**Which products and versions are affected?** Rapid7 InsightConnect Sed Plugin < 2.0.5.

**Is there a fix for CVE-2026-9153?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-9153 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-9153?** Check whether you run Rapid7 InsightConnect Sed Plugin at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An arbitrary file read vulnerability exists in the Rapid7 InsightConnect Sed Plugin on Linux platforms. The flaw is rooted in insufficient input validation of the 'expression' parameter, which allows for path traversal (CWE-22). An authenticated attacker with network access can leverage this to read arbitrary files from the underlying host's filesystem. The vulnerability is addressed in version 2.0.5 of the plugin. The attack requires low privileges and no user interaction.

## Affected products

- Rapid7 InsightConnect Sed Plugin < 2.0.5

## Timeline

- 2026-06-25: disclosed
- 2026-06-25: advisory

## References

- [https://extensions.rapid7.com/extension/sed](https://extensions.rapid7.com/extension/sed)

## Related threats

- [Rapid7 InsightConnect Sed Plugin OS command injection](https://junglewise.ai/threats/cve-2026-9155-rapid7-insightconnect-sed-plugin-os-command-injection)
- [Rapid7 InsightConnect Sed Plugin arbitrary file write in expression parameter](https://junglewise.ai/threats/cve-2026-9154-rapid7-insightconnect-sed-plugin-arbitrary-file-write-in)