Uncanny Automator – Easy Automation…: Deserialization of Untrusted Data
CVE-2025-3623 is a critical-severity deserialization of untrusted data vulnerability in Uncanny Automator – Easy Automation, Integration, Webhooks & Workflow Builder Plugin from Uncannyowl, with a CVSS 3.1 base score of 9.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Uncanny Automator – Easy Automation, Integration, Webhooks & Workflow Builder Plugin versions: 6.4.0.1 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.88% chance of exploitation within 30 days, higher than 60% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update Uncanny Automator to 6.4.0.2 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 |
|---|---|---|---|
| Uncannyowl | Uncanny Automator – Easy Automation, Integration, Webhooks & Workflow Builder Plugin | 6.4.0.1 and earlier | Not stated |
| Uncannyowl | Uncanny Automator | before 6.4.0.2 | 6.4.0.2 |
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
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H. Scored by CNA (wordfence.com).
Official description
The Uncanny Automator plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 6.4.0.1 via deserialization of untrusted input in the automator_api_decode_message() function. This makes it possible for unauthenticated to inject a PHP Object. The additional presence of a POP chain allows attackers to delete arbitrary files.
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: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Third-party and government advisories
Other references
Other vulnerabilities in Uncanny Automator – Easy Automation, Integration, Webhooks & Workflow Builder Plugin
- 7.5 High severity
- 8.1 High severity
- 7.2 High severity
- 8.8 High severity
Recent Deserialization of Untrusted Data vulnerabilities
- 9.5 Critical severity
- 9.1 Critical severity
SAP NetWeaver Deserialization Exploited
- 9.8 Critical severity
- 7.2 High severity
- 7.2 High severity
- 9.8 Critical severity
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