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CVE-2025-31103

22
FAUCET Score

CVE-2025-31103 is an untrusted data deserialization vulnerability affecting a-blog cms, allowing attackers to store arbitrary files and execute scripts on the server by sending a specially crafted request. With a CVSS score of 7.5 (HIGH), this vulnerability is remotely exploitable with low attack complexity, potentially leading to high impact on integrity. While no active exploitation, public exploits, or significant community discussion have been observed, the potential for arbitrary code execution warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.8.80CPE matchmatch criteria
cpe:2.3:a:appleple:a-blog_cms:*:*:*:*:*:*:*:*
>= 2.9.0, <= 2.9.46CPE matchmatch criteria
cpe:2.3:a:appleple:a-blog_cms:*:*:*:*:*:*:*:*
>= 2.10.0, < 2.10.58CPE matchmatch criteria
cpe:2.3:a:appleple:a-blog_cms:*:*:*:*:*:*:*:*
>= 2.11.0, < 2.11.70CPE matchmatch criteria
cpe:2.3:a:appleple:a-blog_cms:*:*:*:*:*:*:*:*
>= 3.0.0, < 3.0.41CPE matchmatch criteria
cpe:2.3:a:appleple:a-blog_cms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.47%
Probability of exploitation in next 30 days
EPSS Percentile
38.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0047 is in the 17th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

developer.a-blogcms.jp / blog/news/entry-4197.html
Vendor Advisory
developer.a-blogcms.jp / blog/news/security-update202503.html
Vendor Advisory
jvn.jp / en/jp/JVN66982699
Third Party Advisory