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TI-2026-32616 Aliases CVE-2026-44729

Twenty: Stored Cross-Site Scripting via Unsanitized File Serving (Missing Content-Type/Content-Disposition Headers)

Priority HIGH 73CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Twenty is an open source CRM. In 1.18.0 and earlier, the file serving endpoints in Twenty CRM at /files/* and /file/:fileFolder/:id serve uploaded files using fileStream.pipe(res) without setting any Content-Type, Content-Disposition, or X-Content-Type-Options response headers. This allows an authenticated attacker to upload an HTML file containing JavaScript, which will be rendered by the victim's browser in the context of the Twenty CRM domain when accessed — enabling session hijacking, account takeover, and data theft.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00258 17th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
twentyhqtwentyup to 1.18.0—No fix listedCNA
  • twenty Vendortwentyhq Affected up to 1.18.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:twenty:twenty:*:*:*:*:*:*:*:*up to 1.18.0Vulnerabletwentyhq
  • cpe:2.3:a:twenty:twenty:*:*:*:*:*:*:*:* Versions up to 1.18.0 Vulnerable ·twentyhq

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44729

References

Exploit 1

  • TI-2026-21368 An issue in Twenty CRM v1.15.0 and before allows a remote attacker to execute arbitrary… CVSS 3.1CRITICAL 9.8
  • TI-2026-34280 Twenty: SQL Injection via the timeZone field CVSS 3.1CRITICAL 9.9
  • TI-2024-18876 The CRM platform Twenty is vulnerable to stored cross site scripting via file upload in… CVSS 3.1HIGH 7.6
  • TI-2024-18877 The CRM platform Twenty version 0.3.0 is vulnerable to SSRF via file upload. CVSS 3.1MEDIUM 5.4
  • TI-2026-21496 Twenty: SSRF protection bypass via HTTP redirect following in secure HTTP client CVSS 3.1MEDIUM 5.0

Sources

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