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Fencer Intel
high 7.5

CVE-2026-22200 in the critical feed json

osTicket (1.18.x < 1.18.3, 1.17.x < 1.17.7) PDF Export Arbitrary File Read

published 9mo ago modified yesterday also EUVD-2026-1918

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
73.6%
EPSS 73.6% chance of exploitation in 30 days, percentile 99.4%
public exploits
1
Metasploit, plus a Nuclei check

Summary

Enhancesoft osTicket versions 1.18.x prior to 1.18.3 and 1.17.x prior to 1.17.7 contain an arbitrary file read vulnerability in the ticket PDF export functionality. A remote attacker can submit a ticket containing crafted rich-text HTML that includes PHP filter expressions which are insufficiently sanitized before being processed by the mPDF PDF generator during export. When the attacker exports the ticket to PDF, the generated PDF can embed the contents of attacker-selected files from the server filesystem as bitmap images, allowing disclosure of sensitive local files in the context of the osTicket application user. This issue is exploitable in default configurations where guests may create tickets and access ticket status, or where self-registration is enabled.

Patch / fix

  • Enhancesoft osTicket 1.17.7, 1.18.3

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Timeline

  1. Published
  2. First public exploit (Metasploit auxiliary/gather/osticket_arbitrary_file_read)

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
9mo ago

Exploit prediction

73.59% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

CVSS scores

assigned by version score vector
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

  • Enhancesoft osTicket

Classification

Weakness
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

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.