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VulnerabilityPublished

CVE-2025-41351: Funambol Cloud Server · Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking

Affects Funambol Cloud ServerSource CVE Database V5

0

Not known to be exploited · CVSS 6.0 Medium.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 4.0 base score
6.0Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
FunambolCloud ServerAffected
  • =30.0.0.20
Fixed in–

AI-suggested

  1. Implement integrity verification mechanisms such as HMAC or authenticated encryption (e.g., AES-GCM) on all encrypted parameters used in access URLs to prevent padding oracle attacks.
  2. Restrict access to the thumbnail display URL endpoint by enforcing strict access controls, IP whitelisting, or network segmentation to limit exposure.
  3. Monitor and log all access to thumbnail URLs and analyze logs for unusual patterns indicative of padding oracle exploitation attempts.
  4. Educate users to recognize and avoid phishing attempts that could trigger user interaction required for exploitation.
  5. Coordinate with Funambol to obtain patches or updates addressing this vulnerability as soon as they become available.
  6. Consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block malformed or suspicious encrypted URL parameters.
  7. Conduct regular security assessments and penetration tests focusing on encrypted input handling and URL parameter security.
  8. If immediate patching is not possible, disable or limit the use of the thumbnail display URL feature temporarily to reduce attack surface.

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.

References

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