What is CVE-2023-27164?

CVE-2023-27164 is a medium-severity vulnerability in Halo, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 4.8/10. Published 2023-03-10.

How severe is CVE-2023-27164?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Arbitrary file upload in Halo

CVE-2023-27164

An arbitrary file upload vulnerability in Halo up to v1.6.1 allows attackers to execute arbitrary code via a crafted .md file.

Vulnerability class: Unrestricted File Upload

Published 2023-03-10 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Halo

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

af854a3a-2127-422b-91ae-364da2661108 (Product)
github.com/halo-dev/halo (Product)
notes.sjtu.edu.cn/s/s5oEvs-p5 (Exploit, Third Party Advisory)
gist.github.com/b33t1e/a1a0d81b1173d0d00de8f4e7958dd867

Frequently asked questions

What is CVE-2023-27164?: CVE-2023-27164 is a medium-severity vulnerability in Halo, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 4.8/10. Published 2023-03-10.
How severe is CVE-2023-27164?: Medium severity. CVSS v3 base score is 4.8 out of 10.