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PatchSiren cyber security CVE debrief

CVE-2026-47114 iina CVE debrief

CVE-2026-47114 is a user-assisted command execution issue affecting IINA before 1.4.3 on macOS. A remote attacker can send a crafted iina://open custom URL that places malicious mpv_-prefixed query parameters into the mpv runtime. If the user approves the browser protocol prompt, the application may execute attacker-controlled commands as the current macOS user, even without a valid media file.

Vendor
iina
Product
Unknown
CVSS
HIGH 8.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-21
Original CVE updated
2026-07-23
Advisory published
2026-05-21
Advisory updated
2026-07-23

Who should care

MacOS users of IINA, especially anyone who opens links from browsers or other untrusted sources; endpoint defenders and administrators managing macOS fleets; security teams monitoring custom URL scheme abuse and application update compliance.

Technical summary

The supplied record describes a flaw in IINA's iina://open URL scheme handler. Untrusted mpv_options and input-commands parameters are passed into the mpv runtime without adequate validation, enabling arbitrary command execution when a victim accepts the browser's protocol handler prompt. The record maps the weakness to CWE-88 and lists a CVSS 4.0 score of 8.6 (HIGH), with network access and user interaction required. The affected range is before IINA 1.4.3, and the supplied references include a disclosure write-up, a fixing commit, and the 1.4.3 release tag.

Defensive priority

High — remote reachability plus code execution impact makes this a priority patch, even though the attack requires user interaction.

Recommended defensive actions

  • Update IINA to version 1.4.3 or later.
  • Treat unexpected iina:// links as suspicious and avoid approving browser protocol prompts unless the source is trusted.
  • If IINA is not required on managed systems, consider removing it or reducing exposure to custom URL scheme handlers.
  • Review endpoint and browser policies for custom protocol handling where practical.
  • Monitor for unusual launches of IINA/mpv following browser link clicks and investigate unexpected command-line behavior.

Evidence notes

Timing is based on the supplied CVE/NVD timestamps: published 2026-05-21T20:16:14.340Z and modified 2026-05-21T21:03:56.320Z. The source item metadata marks the NVD vulnerability status as Deferred. The supplied official and source references point to an IINA disclosure page, an IINA fix commit, the 1.4.3 release tag, and a VulnCheck advisory, all consistent with a command-execution flaw in the iina://open handler.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-47114 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-47114

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-47114 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-47114

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.