What is CVE-2026-45775?

CVE-2026-45775 is a medium-severity vulnerability in Discourse, classified under Path Traversal. CVSS score: 6.8/10. Published 2026-06-12.

How severe is CVE-2026-45775?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Path Traversal in Discourse

CVE-2026-45775

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, a path traversal vulnerability in Discourse backup handling coul…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.003 (24.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N.

Affected products

Discourse — versions >= 2026.4.0-latest, < 2026.4.1, 2026.5.0, >= 2026.3.0-latest, < 2026.3.1

Weakness classification (CWE)

CWE-22 — Path Traversal

References

security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2026-45775?: CVE-2026-45775 is a medium-severity vulnerability in Discourse, classified under Path Traversal. CVSS score: 6.8/10. Published 2026-06-12.
How severe is CVE-2026-45775?: Medium severity. CVSS v3 base score is 6.8 out of 10.