SerpBear before 3.1.1 contains a missing authentication vulnerability in pages/api/notify.ts that allows remote
Source GCVE Database
Not known to be exploited · CVSS 6.9 Medium : upgrade to 3.1.1 when convenient.
Data as of 30 Oct 2026, 20:21 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 6.9 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 5.3 |
- Patch
- Available – fixed in 3.1.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 30 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade serpbear to 3.1.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| towfiqiserpbear | Affected
| Fixed in
|
AI-suggested
A fixed version 3.1.1 or later addresses this issue by ensuring verifyUser() is called to authenticate requests to the /api/notify endpoint. Users should upgrade to SerpBear 3.1.1 or later to remediate this vulnerability. No other mitigation guidance is provided or necessary.
Description
SerpBear versions prior to 3.1.1 have a missing authentication vulnerability in the pages/api/notify.ts endpoint. This flaw allows remote unauthenticated attackers to send repeated POST requests to /api/notify without verification, potentially exhausting SMTP rate limits, triggering abuse flags from email providers, and flooding notification recipients with emails.
References
- nvd.nist.gov/vuln/detail/CVE-2026-119705 (opens in a new tab)
- github.com/towfiqi/serpbear/issues/359 (opens in a new tab)
- github.com/towfiqi/serpbear/commit/12dc0a4bd91f06de2dab96f797c495942f7ef8c9 (opens in a new tab)
- github.com/towfiqi/serpbear (opens in a new tab)
- github.com/towfiqi/serpbear/blob/v3.1.0/pages/api/notify.ts (opens in a new tab)
- github.com/towfiqi/serpbear/releases/tag/v3.1.1 (opens in a new tab)
- vulncheck.com/advisories/serpbear-before-3.1.1-missing-authentication-via-post-api-notify (opens in a new tab)