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Fencer Vulns
critical 9.8

CVE-2020-29597 in the critical feed json

IncomCMS 2.0 has a modules/uploader/showcase/script.php insecure file upload vulnerability.

published 2020-12-07 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-21958

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
71.3%
EPSS 71.3% chance of exploitation in 30 days, percentile 99.4%
public exploits
1
Exploit-DB, plus a Nuclei check

Summary

IncomCMS 2.0 has a modules/uploader/showcase/script.php insecure file upload vulnerability. This vulnerability allows unauthenticated attackers to upload files into the server.

Timeline

  1. Published
  2. First public exploit (EDB-49351)

Exploit prediction

71.33% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-49351 IncomCMS 2.0 - Insecure File Upload webapps, 2021-01-05
  • Nuclei template IncomCMS 2.0 - Arbitrary File Upload nuclei detection template
  • m4dm0e.github.io https://m4dm0e.github.io/2020/12/07/incom-insecure-up.html referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/M4DM0e/m4dm0e.github.io/blob/gh-pages/_posts/2020-12-07-incom-insecure-up.md referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/160784/Incom-CMS-2.0-File-Upload.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type

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.