CVE-2023-45311 — fsevents before 1

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 con

01What is this vulnerability?

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…

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-10-06T00:00:00.000Z
• Last modified: 2024-11-26T21:45:11.260Z

09References

• github.com — https://github.com/fsevents/fsevents/compare/v1.2.10...v1.2.11
• github.com — https://github.com/atlassian/react-immutable-proptypes/blob/ddb9fa5194b931bf7528…
• github.com — https://github.com/atlassian/moo/blob/56ccbdd41b493332bc2cd7a4097a5802594cdb9c/p…
• github.com — https://github.com/cloudflare/authr/blob/3f6129d97d06e61033a7f237d84e35e678db490…
• github.com — https://github.com/cloudflare/hugo-cloudflare-docs/blob/e0f7cfa195af8ef1bfa51a48…
• github.com — https://github.com/cloudflare/redux-grim/blob/b652f99f95fb16812336073951adc5c5a9…
• github.com — https://github.com/cloudflare/serverless-cloudflare-workers/blob/e95e1e9c9770ed9…
• security.snyk.io — https://security.snyk.io/vuln/SNYK-JS-FSEVENTS-5487987