What is CVE-2020-35305?

CVE-2020-35305 is a medium-severity vulnerability in Gollum Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-07-15.

How severe is CVE-2020-35305?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Gollum Project

CVE-2020-35305

Cross site scripting (XSS) in gollum 5.0 to 5.1.2 via the filename parameter to the 'New Page' dialog.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-07-15 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.8% 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: 0.008 · change: +0.000

Affected products

Gollum Project

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

af854a3a-2127-422b-91ae-364da2661108 (Product)
github.com/Szarny/ (Not Applicable)
github.com/gollum/ (Product, Third Party Advisory)
github.com/gollum/gollum/releases/tag/v5.1.2 (Third Party Advisory, Release Notes)

Frequently asked questions

What is CVE-2020-35305?: CVE-2020-35305 is a medium-severity vulnerability in Gollum Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-07-15.
How severe is CVE-2020-35305?: Medium severity. CVSS v3 base score is 6.1 out of 10.