Security Digest · Vulnerability record
CVE-2023-6020: Ray Missing Authorization vulnerability
LFI in Ray's /static/ directory allows attackers to read any file on the server without authentication.
CVSS 9.3 Critical EPSS 14.7% · p97
Should you act?
High exploit likelihood
EPSS ranks it in the top 5% of all CVEs for likely exploitation in the next 30 days. 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. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 14.7%, percentile 97: FIRST’s model estimates a 14.7% chance of exploitation activity in the next 30 days, higher than 97% of all scored CVEs (very high). 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
ray(PyPI) < 2.8.1, fixed in 2.8.1. Check your lockfile, including transitive dependencies.
What it is
LFI in Ray's /static/ directory allows attackers to read any file on the server without authentication.
From the GitHub advisory
LFI in Ray's /static/ directory allows attackers to read any file on the server without authentication. The issue is fixed in version 2.8.1+. Ray maintainers response can be found here: https://www.anyscale.com/blog/update-on-ray-cves-cve-2023-6019-cve-2023-6020-cve-2023-6021-cve-2023-48022-cve-2023-48023
Weakness type: CWE-862, CWE-598.
Product: ray (PyPI) · Assigned by: @huntr_ai · Published: 2023-11-16
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| PyPI | ray | < 2.8.1 | 2.8.1 |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| ray-project | ray-project/ray | unspecified <= latest |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| @huntr_ai | 3.0 | 7.5 High | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 9.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: changed (can affect other components)
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).
- FIRST EPSS (model of 2026-10-21): 14.65% probability of exploitation activity in the next 30 days; percentile 97.
Timeline
- — CVE record published by @huntr_ai
- — GitHub-reviewed advisory GHSA-6cxr-8q3m-jwrr published (critical)
- — CVE record last updated
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-6cxr-8q3m-jwrr github.com
- CVE.org record CVE-2023-6020 cve.org
- NVD entry CVE-2023-6020 nvd.nist.gov
Other references from the CVE record and advisory
- huntr.com huntr.com
- anyscale.com anyscale.com
- github.com github.com