How severe is CVE-2026-3386?

CVE-2026-3386 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-2026-3386 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3386?

CVE-2026-3386 affects Wren. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3386?

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

Does CVE-2026-3386 have an EU (EUVD) identifier?

Yes. CVE-2026-3386 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9121.

When was CVE-2026-3386 published?

CVE-2026-3386 was published on 2026-03-01 and last updated on 2026-06-17.

CVE-2026-3386

CVE-2026-3386 is a low-severity vulnerability in Wren 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-125.

Key facts

Severity: Low (CVSS 3.x base score 3.3)
CVSS v2: 1.7
CVSS v4: 1.9
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9121
Weakness: CWE-125
Affected product: Wren
Published: 2026-03-01
Last modified: 2026-06-17

Description

A flaw has been found in wren-lang wren up to 0.4.0. Affected by this vulnerability is the function emitOp of the file src/vm/wren_compiler.c. This manipulation causes out-of-bounds read. It is possible to launch the attack on the local host. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Frequently asked questions

What is CVE-2026-3386?: A flaw has been found in wren-lang wren up to 0.4.0. Affected by this vulnerability is the function emitOp of the file src/vm/wren_compiler.c. This manipulation causes out-of-bounds read. It is possible to launch the attack on the local host. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
How severe is CVE-2026-3386?: CVE-2026-3386 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-2026-3386 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3386?: CVE-2026-3386 affects Wren. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3386?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-3386 have an EU (EUVD) identifier?: Yes. CVE-2026-3386 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9121.
When was CVE-2026-3386 published?: CVE-2026-3386 was published on 2026-03-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wren:wren:*:*:*:*:*:*:*:*

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