What is CVE-2023-1107?

CVE-2023-1107 is a medium-severity vulnerability in Flatpress, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2023-03-02.

How severe is CVE-2023-1107?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Flatpress

CVE-2023-1107

Cross-site Scripting (XSS) - Stored in GitHub repository flatpressblog/flatpress prior to 1.3.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-03-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (41.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Flatpress
Flatpressblog Flatpressblog/flatpress — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/flatpressblog/flatpress/commit/d3f329496536dc99f9707f2f295d571d65a49… (Patch)
huntr.dev/bounties/4b880868-bd28-4fd0-af56-7686e55d3762 (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2023-1107?: CVE-2023-1107 is a medium-severity vulnerability in Flatpress, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2023-03-02.
How severe is CVE-2023-1107?: Medium severity. CVSS v3 base score is 5.4 out of 10.