TI-2026-10490 Aliases CVE-2026-12198 GHSA-vv4x-qcpq-wgrg

Microweber API Endpoint thumbnail_img userfiles_path path traversal

HIGH 70CWE-22Published 2026-06-15 · Updated 2026-06-15

Key facts

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

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

Summary

A weakness has been identified in Microweber up to 2.0.20. This affects the function userfiles_path of the file /api_nosession/thumbnail_img of the component API Endpoint. Executing a manipulation of the argument cache_path_relative can lead to path traversal. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00525 44th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
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

Vendor	Product	Affected versions	Fixed in	Status	Source
—	Microweber	2.0.0; 2.0.1; 2.0.2; 2.0.3; 2.0.4; 2.0.5; 2.0.6; 2.0.7; 2.0.8; 2.0.9; 2.0.10; 2.0.11; 2.0.12; 2.0.13; 2.0.14; 2.0.15; 2.0.16; 2.0.17; 2.0.18; 2.0.19; 2.0.20	—	No fix listed	CNA
—	microweber/microweber (Packagist)	up to 2.0.20	—	No fix listed	GHSA-vv4x-qcpq-wgrg

Microweber Vendor— Affected 2.0.0; 2.0.1; 2.0.2; 2.0.3; 2.0.4; 2.0.5; 2.0.6; 2.0.7; 2.0.8; 2.0.9; 2.0.10; 2.0.11; 2.0.12; 2.0.13; 2.0.14; 2.0.15; 2.0.16; 2.0.17; 2.0.18; 2.0.19; 2.0.20 Fixed in — No fix listed CNA
microweber/microweber (Packagist) Vendor— Affected up to 2.0.20 Fixed in — No fix listed GHSA-vv4x-qcpq-wgrg

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:microweber:microweber::::::::	—	—	microweber

cpe:2.3:a:microweber:microweber:*:*:*:*:*:*:*:* Versions — — ·microweber

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-12198
2026-10-03 Alias added: GHSA-vv4x-qcpq-wgrg

References

Exploit 1

https://github.com/whuHouYF/microweber-vuldb-disclosure-2026/blob/991630c494a99c70a96e456992a04de2ecb5a1e1/reports/microweber-path-traversal.md

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-12198

Other 3

Sources

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