A stored cross-site scripting (XSS) vulnerability exists in osTicket 1.18.3 due to improper sanitization of the thread entry title field. User-controlled input in the title is stored without adequate HTML escaping and later rendered in multiple staff-facing templates without proper output encoding. An attacker can inject arbitrary JavaScript by submitting a crafted ticket reply or email with a malicious subject line.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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Fixes
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Workaround
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References
History
Mon, 03 Aug 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A stored cross-site scripting (XSS) vulnerability exists in osTicket 1.18.3 due to improper sanitization of the thread entry title field. User-controlled input in the title is stored without adequate HTML escaping and later rendered in multiple staff-facing templates without proper output encoding. An attacker can inject arbitrary JavaScript by submitting a crafted ticket reply or email with a malicious subject line. | |
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MITRE
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-08-03T19:32:20.410Z
Reserved: 2026-04-06T00:00:00.000Z
Link: CVE-2026-38446
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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Weaknesses
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