How severe is CVE-2026-9153?

CVE-2026-9153 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-9153 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-9153?

CVE-2026-9153 affects Gnu Sed. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-9153?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-9153 have an EU (EUVD) identifier?

Yes. CVE-2026-9153 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39155.

When was CVE-2026-9153 published?

CVE-2026-9153 was published on 2026-06-25 and last updated on 2026-06-27.

CVE-2026-9153

CVE-2026-9153 is a medium-severity vulnerability in Gnu Sed with a CVSS 3.x base score of 6.5. 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: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39155
Weakness: CWE-22
Affected product: Gnu Sed
Published: 2026-06-25
Last modified: 2026-06-27

Description

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.

Frequently asked questions

What is CVE-2026-9153?: 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.
How severe is CVE-2026-9153?: CVE-2026-9153 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-9153 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-9153?: CVE-2026-9153 affects Gnu Sed. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-9153?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-9153 have an EU (EUVD) identifier?: Yes. CVE-2026-9153 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39155.
When was CVE-2026-9153 published?: CVE-2026-9153 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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