CVE-2026-22200: Enhancesoft osTicket · Injection
Affects Enhancesoft osTicketSource CVE Database V5
Public exploit available (Metasploit) · 73% EPSS · CVSS 8.7 High : upgrade to 1.18.3 or 1.17.7 as a priority.
Data as of 26 Oct 2026, 10:12 UTC
- EPSS
- 73.5% chance of exploitation in 30 days – higher than 99% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.18.3, 1.17.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 12 Jan 2026
Detectable: evidence found.
Weaponised: evidence found.
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade osTicket and osticket/osTicket to 1.18.3 or 1.17.7.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| EnhancesoftosTicket | Affected
| Fixed in
|
| EnhancesoftosTicket | Affected
| Fixed in
|
GitHubosticket/osTicketpkg:github/osticket/osTicketOther threats | Affected
| Fixed in
|
GitHubosTicketpkg:github/osTicketOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, restrict guest ticket creation and disable self-registration if possible to reduce exposure.
Description
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.
References
- github.com/osTicket/osTicket/releases/tag/v1.18.3 (opens in a new tab)
- github.com/osTicket/osTicket/releases/tag/v1.17.7 (opens in a new tab)
- github.com/osTicket/osTicket/commit/c59b067 (opens in a new tab)
- horizon3.ai/attack-research/attack-blogs/ticket-to-shell-exploiting-php-filters-and-cnext-in-osticket-cve-2026-22200/ (opens in a new tab)
- vulncheck.com/advisories/osticket-pdf-export-arbitrary-file-read (opens in a new tab)