How severe is CVE-2026-3389?

CVE-2026-3389 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-3389 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3389?

CVE-2026-3389 affects Squirrel-lang Squirrel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3389?

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

Does CVE-2026-3389 have an EU (EUVD) identifier?

Yes. CVE-2026-3389 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9124.

When was CVE-2026-3389 published?

CVE-2026-3389 was published on 2026-03-01 and last updated on 2026-06-17.

CVE-2026-3389

CVE-2026-3389 is a low-severity vulnerability in Squirrel-lang Squirrel with a CVSS 3.x base score of 3.3. 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-404.

Key facts

Severity: Low (CVSS 3.x base score 3.3)
CVSS v2: 1.7
CVSS v4: 1.9
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9124
Weakness: CWE-404
Affected product: Squirrel-lang Squirrel
Published: 2026-03-01
Last modified: 2026-06-17

Description

A vulnerability was determined in Squirrel up to 3.2. This vulnerability affects the function sqstd_rex_newnode in the library sqstdlib/sqstdrex.cpp. Executing a manipulation can lead to null pointer dereference. The attack can only be executed locally. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

Frequently asked questions

What is CVE-2026-3389?: A vulnerability was determined in Squirrel up to 3.2. This vulnerability affects the function sqstd_rex_newnode in the library sqstdlib/sqstdrex.cpp. Executing a manipulation can lead to null pointer dereference. The attack can only be executed locally. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.
How severe is CVE-2026-3389?: CVE-2026-3389 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-3389 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3389?: CVE-2026-3389 affects Squirrel-lang Squirrel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3389?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-3389 have an EU (EUVD) identifier?: Yes. CVE-2026-3389 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9124.
When was CVE-2026-3389 published?: CVE-2026-3389 was published on 2026-03-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:squirrel-lang:squirrel:*:*:*:*:*:*:*:*

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