superplanehq SuperPlane up to 0.29.x Title crlf injection

Summaryinfo

A vulnerability has been found in superplanehq SuperPlane up to 0.29.x and classified as very critical. This issue affects some unknown processing. The manipulation of the argument Title leads to crlf injection. This vulnerability is documented as CVE-2026-57511. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in superplanehq SuperPlane up to 0.29.x and classified as very critical. This issue affects an unknown part. The manipulation of the argument title with an unknown input leads to a crlf injection vulnerability. Using CWE to declare the problem leads to CWE-93. The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-57511 since 06/24/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/28/2026).

Upgrading to version 0.30.0 eliminates this vulnerability.

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Productinfo

Vendor

• superplanehq

Name

• SuperPlane

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29

Website

• Product: https://github.com/superplanehq/superplane/

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