CVE-2025-62618: ELOG file upload stored XSS

Severity: high (CVSS 8.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-31 · updated 2026-10-19
Weakness: CWE-79

Description

ELOG allows an authenticated user to upload arbitrary HTML files. The HTML content is executed in the context of other users when they open the file. Because ELOG includes usernames and password hashes in certain HTTP requests, an attacker can obtain the target's credentials and replay them or crack the password hash offline. In ELOG 3.1.5-20251014 release, HTML files are rendered as plain text.

Affected products

ELOG: before 3.1.5-20251014 — fixed in 3.1.5-20251014

How to fix

Upgrade to a fixed version: ELOG 3.1.5-20251014. Check the vendor advisory for mitigations.

References

https://bitbucket.org/ritt/elog/commits/7092ff64f6eb9521f8cc8c52272a020bf3730946
https://bitbucket.org/ritt/elog/commits/f81e5695c40997322fe2713bfdeba459d9de09dc
https://elog.psi.ch/elog/download/RPMS/?C=M;O=D
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-304-01.json
https://www.cve.org/CVERecord?id=CVE-2025-62618

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