CVE detail
CVE-2026-57511
SuperPlane before 0.30.0 contains an SMTP header injection vulnerability that allows unauthenticated attackers to inject arbitrary SMTP headers by including CRLF sequences in the event payload title field delivered via webhook. Attackers can manipulate the unsanitized title field passed to the SMTP DATA command to add Bcc recipients for content exfiltration, forge the From address to bypass SPF and DKIM checks, or inject Content-Type and MIME boundary headers to corrupt message bodies for phishing.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 16.1 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 4
- within the 30d window
- Peak daily
- 4
- highest bucket
Evidence
Source links by recency
4 source links · newest first
- https://www.vulncheck.com/advisories/superplane-smtp-header-injection-via-webhook-event-titlewww.vulncheck.com
No excerpt available.
Exploitwww.vulncheck.comJul 28, 2026, 8:17 PM No excerpt available.
Exploitgithub.comJul 28, 2026, 8:17 PMNo excerpt available.
Exploitgithub.comJul 28, 2026, 8:17 PM- https://github.com/superplanehq/superplane/commit/428c559dd2fa0aef3ba825a434a1b05c9abc7df7github.com
No excerpt available.
Exploitgithub.comJul 28, 2026, 8:17 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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