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TI-2026-81370 Aliases CVE-2026-109823GHSA-cw46-9gf7-56p5

Host filesystem path disclosure in Tidewave via DNS rebinding

Priority LOW 12CWE-497Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-497.

Summary

The tidewave package from tidewave-ai, from 0.8.0 before 0.9.2, lets a web page read filesystem paths of the application through its Tidewave configuration at /tidewave/connect or the rendered toolbar. Neither response checks the Host header, so a page that rebinds its own domain to the loopback address can read the paths with a same-origin request. An attacker can learn the local username and project layout from the exposed paths, and this flaw is tracked as CWE-497.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

An attacker can read the name of filesystem paths of your application present via Tidewave configuration via /tidewave/connect or via the rendered toolbar. Neither response checks the Host header. A web page that rebinds its own domain to the loopback address can therefore read the tag with a same-origin request, which carries no Origin header. The paths usually reveal the local username and the project layout. This issue affects tidewave: from 0.8.0 before 0.9.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00368 30th percentileScored 2026-11-07
Fix Fixed tidewave (tidewave-ai): 0.9.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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
tidewave-aitidewave0.8.0 to before 0.9.20.9.2Patch availableCNA
  • tidewave Vendortidewave-ai Affected 0.8.0 to before 0.9.2 Fixed in 0.9.2 Patch available CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:tidewave-ai:tidewave:*:*:*:*:*:*:*:*———
  • cpe:2.3:a:tidewave-ai:tidewave:*:*:*:*:*:*:*:* Versions — — ·—

Remediation

Update tidewave to version 0.9.2 or later. Versions from 0.8.0 before 0.9.2 are affected.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA tidewave (tidewave-ai) Fixed in 0.9.2

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-109823
  2. 2026-10-27 Alias added: GHSA-cw46-9gf7-56p5
  3. 2026-11-04 CISA SSVC decision points changed

References

Patch 1

Advisory 1

Other 2

Sources

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