How severe is CVE-2023-45311?

CVE-2023-45311 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-45311 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-45311?

CVE-2023-45311 affects Fsevents Project Fsevents. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-45311?

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

When was CVE-2023-45311 published?

CVE-2023-45311 was published on 2023-10-06 and last updated on 2026-06-17.

CVE-2023-45311

CVE-2023-45311 is a critical-severity vulnerability in Fsevents Project Fsevents with a CVSS 3.x base score of 9.8. 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-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Fsevents Project Fsevents
Published: 2023-10-06
Last modified: 2026-06-17

Description

fsevents before 1.2.11 depends on the https://fsevents-binaries.s3-us-west-2.amazonaws.com URL, which might allow an adversary to execute arbitrary code if any JavaScript project (that depends on fsevents) distributes code that was obtained from that URL at a time when it was controlled by an adversary. NOTE: some sources feel that this means that no version is affected any longer, because the URL is not controlled by an adversary.

Frequently asked questions

What is CVE-2023-45311?: fsevents before 1.2.11 depends on the https://fsevents-binaries.s3-us-west-2.amazonaws.com URL, which might allow an adversary to execute arbitrary code if any JavaScript project (that depends on fsevents) distributes code that was obtained from that URL at a time when it was controlled by an adversary. NOTE: some sources feel that this means that no version is affected any longer, because the URL is not controlled by an adversary.
How severe is CVE-2023-45311?: CVE-2023-45311 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-45311 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-45311?: CVE-2023-45311 affects Fsevents Project Fsevents. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-45311?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-45311 published?: CVE-2023-45311 was published on 2023-10-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fsevents_project:fsevents:*:*:*:*:*:node.js:*:*

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