Frontend Dashboard: Deserialization of Untrusted Data
CVE-2026-103693 is a critical-severity deserialization of untrusted data vulnerability in Frontend Dashboard, with a CVSS 3.1 base score of 9.0 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 3.0.5 as the first without the flaw, so updating Frontend Dashboard to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.47% chance of exploitation within 30 days, which is low compared with other CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update Frontend Dashboard to 3.0.5 or a later version.
- Update ProfileGrid to 6.0.0.5 or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Frontend Dashboard | Frontend Dashboard | before 3.0.5 | 3.0.5 |
| ProfileGrid | ProfileGrid | before 6.0.0.5 | 6.0.0.5 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H. Scored by CISA (ADP).
Official description
The Frontend Dashboard WordPress plugin before 3.0.5, ProfileGrid WordPress plugin before 6.0.0.5 do not prevent an unauthenticated user from storing a serialized PHP object in user metadata that is deserialized when a public profile is viewed, allowing PHP object injection that can lead to arbitrary file write and potential remote code execution.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
How developers prevent this class of flaw
- If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.
- When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.
- Explicitly define a final object() to prevent deserialization.
More Deserialization of Untrusted Data vulnerabilities (CWE-502)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
References
Other references
Other vulnerabilities in Frontend Dashboard
- 9.8 Critical severity
Recent Deserialization of Untrusted Data vulnerabilities
- 8.7 High severity
- 9.3 Critical severity
- 7.5 High severity
- 7.2 High severity
- 9.8 Critical severity
- 7.8 High severity
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