CVE-2025-47784

Description

Emlog is an open source website building system. Versions 2.5.13 and prior have a deserialization vulnerability. A user who creates a carefully crafted nickname can cause `str_replace` to replace the value of `name_orig` with empty, causing deserialization to fail and return `false`. Commit 9643250802188b791419e3c2188577073256a8a2 fixes the issue.

CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-502 Deserialization of Untrusted Data

Affected Products

Vendor	Product	Versions
emlog	emlog	< 2.5.14

References

Advisories & Patches

https://github.com/emlog/emlog/commit/9643250802188b791419e3c2188577073256a8a2

Other References

https://github.com/emlog/emlog/security/advisories/GHSA-f56g-m99v-mqc3

Frequently Asked Questions

What is CVE-2025-47784? +

Emlog is an open source website building system. Versions 2.5.13 and prior have a deserialization vulnerability. A user who creates a carefully crafted nickname can cause `str_replace` to replace the value of `name_orig` with empty, causing deserialization to fail and return `false`. Commit 9643250802188b791419e3c2188577073256a8a2 fixes the issue. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-47784? +

CVE-2025-47784 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-47784? +

CVE-2025-47784 affects products from emlog, specifically: emlog. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-47784? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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