What is CVE-2026-5259?

CVE-2026-5259 is a medium-severity vulnerability in Autohomecorp Frostmourne, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.3/10. Published 2026-04-01.

How severe is CVE-2026-5259?

Medium severity. CVSS v3 base score is 6.3 out of 10.

SSRF in Autohomecorp Frostmourne

CVE-2026-5259

A vulnerability was determined in AutohomeCorp frostmourne up to 1.0. The affected element is an unknown function of the file frostmourne-monitor/src/main/java/com/autohome/frostmourne/monitor/controller/AlarmController.java of the component Alarm Preview. Executing a manipulation can lead to server-side request forgery. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2026-04-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.003 (25.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Autohomecorp Frostmourne — versions 1.0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

vuldb.com/vuln/354449 (vdb-entry)
vuldb.com/vuln/354449/cti (signature, permissions-required)
vuldb.com/submit/780669 (third-party-advisory)
fx4tqqfvdw4.feishu.cn/docx/GE4GdxBxKoSvBOxhkTRcsawlnhc (exploit)

Frequently asked questions

What is CVE-2026-5259?: CVE-2026-5259 is a medium-severity vulnerability in Autohomecorp Frostmourne, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.3/10. Published 2026-04-01.
How severe is CVE-2026-5259?: Medium severity. CVSS v3 base score is 6.3 out of 10.