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Fencer Vulns
high 7.5

CVE-2018-17055 json

An arbitrary file upload vulnerability in Progress Sitefinity CMS versions 4.0 through 11.0 related to image uploads.

published 2018-09-28 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-8838

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

An arbitrary file upload vulnerability in Progress Sitefinity CMS versions 4.0 through 11.0 related to image uploads.

Exploit prediction

0.97% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • insinuator.net https://insinuator.net/2018/10/vulnerabilities-in-sitefinity-wcms-a-success-story-of-a-responsible-disclosure-process/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N

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.