CVE-2025-31103

Description

Untrusted data deserialization vulnerability exists in a-blog cms. Processing a specially crafted request may store arbitrary files on the server where the product is running. This can be leveraged to execute an arbitrary script on the server.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
EPSS 0.04%
Vendor Advisory a-blogcms.jp Vendor Advisory a-blogcms.jp
Affected: appleple inc. a-blog cms (Ver.3.1.x series)
Affected: appleple inc. a-blog cms (Ver.3.0.x series)
Affected: appleple inc. a-blog cms (Ver.2.11.x series)
Affected: appleple inc. a-blog cms (Ver.2.10.x series)
Affected: appleple inc. a-blog cms (Ver.2.9.x series)
Affected: appleple inc. a-blog cms (Ver. 2.8.x series)
Published at:
Updated at:

References

Link Tags
https://developer.a-blogcms.jp/blog/news/security-update202503.html vendor advisory
https://developer.a-blogcms.jp/blog/news/entry-4197.html vendor advisory
https://jvn.jp/en/jp/JVN66982699/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2025-31103?
CVE-2025-31103 has been scored as a high severity vulnerability.
How to fix CVE-2025-31103?
To fix CVE-2025-31103, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-31103 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-31103 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-31103?
CVE-2025-31103 affects appleple inc. a-blog cms (Ver.3.1.x series), appleple inc. a-blog cms (Ver.3.0.x series), appleple inc. a-blog cms (Ver.2.11.x series), appleple inc. a-blog cms (Ver.2.10.x series), appleple inc. a-blog cms (Ver.2.9.x series), appleple inc. a-blog cms (Ver. 2.8.x series).
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