Flowintel Login form.email _sanitize_log_fragment input validation

Summaryinfo

A vulnerability, which was classified as critical, was found in Flowintel. This vulnerability affects the function _sanitize_log_fragment of the file form.email of the component Login. The manipulation of the argument email results in input validation. This vulnerability is known as CVE-2026-81827. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Flowintel (affected version not known). Affected is the function _sanitize_log_fragment of the file form.email of the component Login. The manipulation of the argument email with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on integrity, and availability. CVE summarizes:

Affected versions of Flowintel incorrectly attempted to validate login email addresses by calling Email(email). That does not perform WTForms field validation; it merely constructs a validator object. Consequently, malformed attacker-controlled email input could continue through the login process and be written to security-relevant logs. The vulnerable code inserted the supplied email into both a warning log and the custom audit logger. Since CR/LF characters were not escaped, an unauthenticated attacker could potentially inject additional physical log lines or forge misleading log entries. The patch corrects the validation call to Email()(form, form.email), changes the standard logging call to parameterized logging, and introduces _sanitize_log_fragment() so carriage returns and line feeds are encoded instead of creating new records. Version impacted >=3.3.0

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-81827 since 08/27/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

Applying the patch 660b4cc405055a794f157d3e4612520f12fe65bf is able to eliminate this problem.

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Productinfo

Name

• Flowintel

Website

• Product: https://github.com/flowintel/flowintel/

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