CVE-2026-119705 Details
Description
SerpBear before 3.1.1 contains a missing authentication vulnerability in pages/api/notify.ts that allows remote unauthenticated attackers to trigger notification emails because verifyUser() is never called. Attackers can repeatedly POST to /api/notify, optionally with a domain parameter, to exhaust SMTP rate limits, trigger provider abuse flags and flood recipients.
A missing authentication vulnerability has been identified in SerpBear versions prior to 3.1.1, specifically in the API notification endpoint. This vulnerability allows remote unauthenticated attackers to send notification emails by exploiting the fact that the verifyUser() function is not called. Attackers can repeatedly POST to /api/notify, potentially using a domain parameter, to overwhelm SMTP rate limits, trigger abuse flags with email providers, and flood email recipients with messages.
Users can update to SerpBear version 3.1.1 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 30, 2026CISA-ADP
Assessed Oct 30, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/towfiqi/serpbear | [email protected] | ProductVendor |
| https://github.com/towfiqi/serpbear/blob/v3.1.0/pages/api/notify.ts#L16-L21 | [email protected] | Source CodeVendor |
| https://github.com/towfiqi/serpbear/commit/12dc0a4bd91f06de2dab96f797c495942f7ef8c9 | [email protected] | Source CodeVendor |
| https://github.com/towfiqi/serpbear/issues/359 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/towfiqi/serpbear/releases/tag/v3.1.1 | [email protected] | Release NotesVendor |
| https://www.vulncheck.com/advisories/serpbear-before-3.1.1-missing-authentication-via-post-api-notify | [email protected] | AdvisoryBundle |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-306 | Missing Authentication for Critical Function | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| SerpBear | >= 0, < 3.1.1 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 30, 2026 | CVE Modified | CISA-ADP |
| Oct 30, 2026 | New CVE Received | [email protected] |