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Vulnerability record · CVE-2026-21431 · published 2 January 2026

CVE-2026-21431: Emlog cross-site scripting vulnerability

Emlog · Emlog

Emlog is an open source website building system. Version 2.5.23 has a stored cross-site scripting vulnerability in the `Resource media library ` function while publishing an article. As of time of publication, no known patched versions are available.

2.0 CVSS 4.0 Low EPSS 0.19% · top 92.0% CWE-79 · Cross-site scripting
2.0CVSS 4.0 base score
0.19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

Emlog is an open source website building system. Version 2.5.23 has a stored cross-site scripting vulnerability in the `Resource media library ` function while publishing an article. As of time of publication, no known patched versions are available.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/emlog/emlog/security/advisories/GHSA-9vc2-crhr-248x ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-29401Emlog code injection vulnerabilityAn arbitrary file upload vulnerability in the component /views/plugin.php of emlog pro v2.5.7 allows attackers to execute arbitrary code via uploadin…EPSS 0.77%9.8CVE-2025-25783Emlog unrestricted file upload vulnerabilityAn arbitrary file upload vulnerability in the component admin\plugin.php of Emlog Pro v2.5.3 allows attackers to execute arbitrary code via uploading…EPSS 0.71%9.8CVE-2023-44973Emlog unrestricted file upload vulnerabilityAn arbitrary file upload vulnerability in the component /content/templates/ of Emlog Pro v2.2.0 allows attackers to execute arbitrary code via upload…EPSS 1.0%9.8CVE-2023-44974Emlog unrestricted file upload vulnerabilityAn arbitrary file upload vulnerability in the component /admin/plugin.php of Emlog Pro v2.2.0 allows attackers to execute arbitrary code via uploadin…EPSS 19%9.8CVE-2023-43291Emlog deserialization of untrusted data vulnerabilityDeserialization of Untrusted Data in emlog pro v.2.1.15 and earlier allows a remote attacker to execute arbitrary code via the cache.php component.EPSS 1.6%9.8CVE-2022-23379Emlog sql injection vulnerabilityEmlog v6.0 was discovered to contain a SQL injection vulnerability via the $TagID parameter of getblogidsfromtagid().EPSS 1.4%9.8CVE-2021-40883Emlog unrestricted file upload vulnerabilityA Remote Code Execution (RCE) vulnerability exists in emlog 5.3.1 via content/plugins.EPSS 3.0%9.8CVE-2021-31737Emlog unrestricted file upload vulnerabilityemlog v5.3.1 and emlog v6.0.0 have a Remote Code Execution vulnerability due to upload of database backup file in admin/data.php.EPSS 3.9%

Source: NIST National Vulnerability Database (record CVE-2026-21431), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.