TI-2023-18009 Aliases CVE-2023-35948

Novu Open Redirect Vulnerability in Sign-In with GitHub Functionality

LOW 27CWE-601Published 2023-07-06 · Updated 2024-10-18

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Spoofing
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-601.

Summary

Novu provides an API for sending notifications through multiple channels. Versions prior to 0.16.0 contain an open redirect vulnerability in the "Sign In with GitHub" functionality of Novu's open-source repository. It could have allowed an attacker to force a victim into opening a malicious URL and thus, potentially log into the repository under the victim's account gaining full control of the account. This vulnerability only affected the Novu Cloud and Open-Source deployments if the user manually enabled the GitHub OAuth on their self-hosted instance of Novu. Users should upgrade to version 0.16.0 to receive a patch.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00393 33rd percentileScored 2026-11-07

Fix Fixed novu (novuhq): 0.16.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
novuhq	novu	before 0.16.0	0.16.0	Patch available	CNA

novu Vendornovuhq Affected before 0.16.0 Fixed in 0.16.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:novu:novu::::::::	before 0.16	Vulnerable	@novu

cpe:2.3:a:novu:novu:*:*:*:*:*:*:*:* Versions before 0.16 Vulnerable ·@novu

Remediation

Fix · CNA novu (novuhq) Fixed in 0.16.0

Timeline

2026-10-02 Threatist record created from CVE-2023-35948

References

Patch 1

https://github.com/novuhq/novu/pull/3510

Advisory 1

https://github.com/novuhq/novu/security/advisories/GHSA-xxv3-m43w-gv79

TI-2026-52875 Novu: Stored XSS in In-App Inbox via notification redirect.url javascript: scheme CVSS 4.0MEDIUM 5.1
TI-2026-52880 Novu: Cross-Environment Integration Manipulation (IDOR) CVSS 3.1MEDIUM 6.5
TI-2026-52876 Novu: Server-Side Request Forgery (SSRF) via Chat Provider Webhook URLs CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences