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TI-2026-56456 Aliases CVE-2026-81827GHSA-3hq8-r684-4qwf

Flowintel Login Email Validation Bypass Allows Log Injection via Crafted Email Input

Priority LOW 37CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00434 37th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
flowintelflowintelup to 3.3.0—No fix listedCNA
  • flowintel Vendorflowintel Affected up to 3.3.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-81827
  2. 2026-10-03 Alias added: GHSA-3hq8-r684-4qwf

References

Patch 1

  • TI-2026-56455 Flowintel Fails to Invalidate Active Sessions After Password Change CVSS 4.0CRITICAL 9.1
  • TI-2026-56320 Flowintel Alert Settings Configuration Allows Remote Code Execution via Arbitrary Configuration Keys CVSS 4.0HIGH 8.6
  • TI-2026-56447 Flowintel Organization Administrator Can Reset Full Administrator Password and Escalate Privileges CVSS 4.0HIGH 8.6
  • TI-2026-56389 Flowintel Arbitrary Log File Path Allows Remote Code Execution via Template Injection CVSS 4.0HIGH 7.5
  • TI-2026-56446 Flowintel Missing Task-to-Case Authorization Allows Cross-Case Task Modification CVSS 4.0HIGH 7.2
  • TI-2026-56318 Flowintel Note PDF Export Allows Arbitrary Local File Read via Pandoc/XeLaTeX Processing CVSS 4.0HIGH 7.1
See all 12 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences