Security Digest · Vulnerability record
CVE-2025-27517: Volt Allows RCE Via User-Crafted Requests
Volt is an elegantly crafted functional API for Livewire.
CVSS 9.3 Critical EPSS 0.6% · p49
Should you act?
Critical and remotely reachable
No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.6%, percentile 49: FIRST’s model estimates a 0.6% chance of exploitation activity in the next 30 days, higher than 49% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes
livewire/volt(Composer (PHP)) < 1.7.0, fixed in 1.7.0. Check your lockfile, including transitive dependencies.
What it is
Volt is an elegantly crafted functional API for Livewire. Malicious, user-crafted request payloads could potentially lead to remote code execution within Volt components. This vulnerability is fixed in 1.7.0.
From the GitHub advisory
Malicious, user-crafted request payloads could potentially lead to remote code execution within Volt components.
Weakness type: CWE-20.
Product: livewire/volt (Composer (PHP)) · Assigned by: GitHub_M · Published: 2025-03-05
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| Composer (PHP) | livewire/volt | < 1.7.0 | 1.7.0 |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| livewire | volt | < 1.7.0 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_M | 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| GitHub | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Attack requirements: none
- Privileges required: none (no login)
- User interaction: none
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none, automatable yes, technical impact total.
- FIRST EPSS (model of 2026-10-21): 0.62% probability of exploitation activity in the next 30 days; percentile 49.
Timeline
- — CVE record last updated
- — CVE record published by GitHub_M
- — GitHub-reviewed advisory GHSA-v69f-5jxm-hwvv published (critical)
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-v69f-5jxm-hwvv github.com
- CVE.org record CVE-2025-27517 cve.org
- NVD entry CVE-2025-27517 nvd.nist.gov
Other references from the CVE record and advisory
- github.com github.com
Critical Composer (PHP) advisories · Today’s Security Digest