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CVE-2025-61597: Emlog Pro is vulnerable to stored XSS attack through HTML template injection

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-10-03 · updated 2026-10-19
• Weakness: CWE-79

Description

Emlog is an open source website building system. In versions 2.5.21 and below, an HTML template injection allows stored cross‑site scripting (XSS) via the mail template settings. Once a malicious payload is saved, any subsequent visit to the settings page in an authenticated admin context will execute attacker‑controlled JavaScript, enabling session/token theft and full admin account takeover. This issue is fixed in version 2.5.22.

Affected products

• emlog: through 2.5.19

References

• https://github.com/emlog/emlog/pull/179
• https://github.com/emlog/emlog/security/advisories/GHSA-hj97-hp2c-6m4m

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