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Fencer Vulns
high 8.5

CVE-2022-23626 json

Insufficient file checks in m1k1o/blog

published 2022-02-08 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-28584

cvss
8.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
9.9%
EPSS 9.9% chance of exploitation in 30 days, percentile 95%
public exploits
1
Exploit-DB

Summary

m1k1o/blog is a lightweight self-hosted facebook-styled PHP blog. Errors from functions `imagecreatefrom*` and `image*` have not been checked properly. Although PHP issued warnings and the upload function returned `false`, the original file (that could contain a malicious payload) was kept on the disk. Users are advised to upgrade as soon as possible. There are no known workarounds for this issue.

Patch / fix

  • blog_project blog 1.4

Timeline

  1. Published
  2. First public exploit (EDB-50943)

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
18 mo ago

Exploit prediction

9.87% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-50943 m1k1o's Blog v.10 - Remote Code Execution (RCE) (Authenticated) webapps, 2022-05-23
  • packetstormsecurity.com http://packetstormsecurity.com/files/167235/m1k1os-Blog-1.3-Remote-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

  • m1k1o blog

Classification

Weakness
  • CWE-20 Improper Input Validation
  • CWE-252 Unchecked Return Value

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.