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Fencer Intel
critical 9.8

CVE-2017-15580 in the critical feed json

osTicket 1.10.1 provides a functionality to upload 'html' files with associated formats.

published 2017-10-23 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-7032

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
15.6%
EPSS 15.6% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

osTicket 1.10.1 provides a functionality to upload 'html' files with associated formats. However, it does not properly validate the uploaded file's contents and thus accepts any type of file, such as with a tickets.php request that is modified with a .html extension changed to a .exe extension. An attacker can leverage this vulnerability to upload arbitrary files on the web application having malicious content.

Timeline

  1. Published
  2. First public exploit (EDB-45169)

Exploit prediction

15.56% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-45169 osTicket 1.10.1 - Arbitrary File Upload webapps, 2018-08-08
  • becomepentester.blogspot.com https://becomepentester.blogspot.com/2017/10/osTicket-File-Upload-Restrictions-Bypassed-CVE-2017-15580.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com https://packetstormsecurity.com/files/144747/osticket1101-shell.txt referenced PoC, tagged "exploit" by a source, unverified
  • cxsecurity.com https://cxsecurity.com/issue/WLB-2017100187 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/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 Intel 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.