CVE-2026-90769CWE-918ssrf

CVE-2026-90769

High · published September 13, 2026

CVSS v3.1
7.7
EPSS
0%
Percentile
34.7
In the wild
Unconfirmed
What it is

Open Notebook before 1.11.0 fails to validate the URL parameter in POST /api/sources endpoint, allowing authenticated users to perform server-side requests to internal services. Attackers can supply arbitrary URLs to read cloud metadata, internal network services, and localhost-bound services through the application server's direct HTTP requests.

The record
Technical detail
CVSS v3.1
7.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
8.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
EPSS
0.00415 · 34.7th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-09-13T15:17Z
References (6)
https://github.com/lfnovo/open-notebook · [email protected]https://github.com/lfnovo/open-notebook/blob/8889087e317177d7b6e286342ab34e0c9c01d43e/api/routers/sources.py · [email protected]https://github.com/lfnovo/open-notebook/commit/9045ea50196927eac7de647bb5b7009349236fb4 · [email protected]https://github.com/lfnovo/open-notebook/issues/1284 · [email protected]https://www.vulncheck.com/advisories/open-notebook-before-1.11.0-server-side-request-forgery-via-link-source · [email protected]https://github.com/lfnovo/open-notebook/issues/1284 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 15 SEP 03:22Z
    EPSS moved — → 0%
    epss
  • 13 SEP 10:45Z
    Open Notebook before 1.11.0 Server-Side Request Forgery via link-source
    cvelistv5