CVE-2026-12198
CVE-2026-12198 is a high-severity vulnerability with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: High (CVSS 3.x base score 7.3)
- CVSS v2: 7.5
- CVSS v4: 5.5
- EPSS exploit prediction: 1% (41st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-36674
- Weakness: CWE-22
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2026-12198?
- 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.
- How severe is CVE-2026-12198?
- CVE-2026-12198 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2026-12198 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-12198?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-12198 have an EU (EUVD) identifier?
- Yes. CVE-2026-12198 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36674.
- When was CVE-2026-12198 published?
- CVE-2026-12198 was published on 2026-06-15 and last updated on 2026-06-17.
References
- https://github.com/microweber/microweber/
- https://github.com/microweber/microweber/issues/1172
- https://github.com/whuHouYF/microweber-vuldb-disclosure-2026/blob/991630c494a99c70a96e456992a04de2ecb5a1e1/reports/microweber-path-traversal.md
- https://vuldb.com/cve/CVE-2026-12198
- https://vuldb.com/submit/829596
- https://vuldb.com/vuln/370841
- https://vuldb.com/vuln/370841/cti
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