CVE-2026-21432 | BDVDB-2026-309003 Detail

emlogemlog

Description#

Emlog is an open source website building system. Version 2.5.23 has a stored cross-site scripting vulnerability that can lead to account takeover, including takeover of admin accounts. As of time of publication, no known patched versions are available.

Impact#

Per CVSS v4.0: confidentiality impact none, integrity impact high, availability impact none. Attack vector: network.

Weaknesses#

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References#

https://github.com/emlog/emlog/security/advisories/GHSA-4rxf-mjqx-c464

Exploit#

No public exploit known

History#

Version 12026-01-02Record published in the CVE List.
Version 22026-01-05Most recent update recorded in the CVE List.

Published

Published: 2026-01-02
Last modified: 2026-01-05

Vendor information

Vendor: emlog
Product: emlog

All emlog vulnerabilities

Score

6.8 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 9.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Cross-Site Scripting

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
= 2.5.23
Fixed
Not stated

Scoring System

CVSS v4.0

6.8 Medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:P

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Attack Requirements	None
Privileges Required	Low
User Interaction	Active
Vulnerable System Confidentiality	None
Vulnerable System Integrity	High
Vulnerable System Availability	None
Subsequent System Confidentiality	None
Subsequent System Integrity	High
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).