How severe is CVE-2026-9154?

CVE-2026-9154 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.

Is CVE-2026-9154 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-9154?

CVE-2026-9154 affects Gnu Sed. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-9154?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-9154 have an EU (EUVD) identifier?

Yes. CVE-2026-9154 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39154.

When was CVE-2026-9154 published?

CVE-2026-9154 was published on 2026-06-25 and last updated on 2026-06-27.

CVE-2026-9154

CVE-2026-9154 is a high-severity vulnerability in Gnu Sed with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39154
Weakness: CWE-22
Affected product: Gnu Sed
Published: 2026-06-25
Last modified: 2026-06-27

Description

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.

Frequently asked questions

What is CVE-2026-9154?: 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.
How severe is CVE-2026-9154?: CVE-2026-9154 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.
Is CVE-2026-9154 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-9154?: CVE-2026-9154 affects Gnu Sed. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-9154?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-9154 have an EU (EUVD) identifier?: Yes. CVE-2026-9154 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39154.
When was CVE-2026-9154 published?: CVE-2026-9154 was published on 2026-06-25 and last updated on 2026-06-27.

References

https://extensions.rapid7.com/extension/sed

Affected products (1)

cpe:2.3:a:gnu:sed:4.2.2:*:*:*:*:*:*:*

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