CVE-2023-45311

Exp

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.

Published: 2023-10-06 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-45311 is rated High Exploit Risk (80.8/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.88%). 6 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2023-45311

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2023-45311

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-24 0.65% 0.88% +0.23%
2 2026-04-23 0.56% 0.65% +0.10%
3 2026-04-22 — 0.56% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-45311

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]

Weakness enumeration for CVE-2023-45311

GitHub Security Advisory for CVE-2023-45311

OS Trackers for CVE-2023-45311

vendor priority summary link
ubuntu medium CVE-2023-45311 medium priority: Ubuntu including 2 source packages (npm, qtwebengine-opensource-src), 24 status rows across 12 suites (bionic, focal, jammy, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): needs-triage 14, ignored 10. https://ubuntu.com/security/CVE-2023-45311

Affected software / configurations for CVE-2023-45311

Vendor Product Version Raw CPE
fsevents_project fsevents < 1.2.11 cpe:2.3:a:fsevents_project:fsevents:*:*:*:*:*:node.js:*:*

References for CVE-2023-45311

URL Tags
https://github.com/atlassian/moo/blob/56ccbdd41b493332bc2cd7a4097a5802594cdb9c/package-lock.json#L1901-L1902 Exploit Vendor Advisory
https://github.com/atlassian/react-immutable-proptypes/blob/ddb9fa5194b931bf7528eb4f2c0a8c3434f70edd/package-lock.json#L153 Exploit Vendor Advisory
https://github.com/cloudflare/authr/blob/3f6129d97d06e61033a7f237d84e35e678db490f/ts/package-lock.json#L1512 Exploit Vendor Advisory
https://github.com/cloudflare/hugo-cloudflare-docs/blob/e0f7cfa195af8ef1bfa51a487be7d34ba298ed06/package-lock.json#L494 Exploit Vendor Advisory
https://github.com/cloudflare/redux-grim/blob/b652f99f95fb16812336073951adc5c5a93e2c23/package-lock.json#L266-L267 Exploit Vendor Advisory
https://github.com/cloudflare/serverless-cloudflare-workers/blob/e95e1e9c9770ed9a3d9480c1fa73e64391268354/package-lock.json#L737 Exploit Vendor Advisory
https://github.com/fsevents/fsevents/compare/v1.2.10...v1.2.11 Patch Vendor Advisory
https://security.snyk.io/vuln/SNYK-JS-FSEVENTS-5487987
cvelogic Threat Intelligence