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CVE-2026-38444

osTicket v1.18.3 is vulnerable to Stored Cross-Site Scripting (XSS) via the email From-header display name. The value is extracted without sanitization in include/class.mailparse.php and stored raw in the poster field of ost_thread_entry. When an unauthenticated attacker sends a reply email to an existing ticket from an unregistered address with an XSS payload in the From display name.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a31a7b9af5d8f0596271f0a136c4c79a6854cee215fa32ccbe9b5172f805a681
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e43c9490fe513579369698586213e36c4c827f3f251eb66c4d440af44aca0ed8 · sha256:55c26955e770586e… · /containers/adp/0/problemTypes/0/descriptions/0

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e43c9490fe513579369698586213e36c4c827f3f251eb66c4d440af44aca0ed8 · sha256:55c26955e770586e… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e43c9490fe513579369698586213e36c4c827f3f251eb66c4d440af44aca0ed8 · sha256:55c26955e770586e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e43c9490fe513579369698586213e36c4c827f3f251eb66c4d440af44aca0ed8 · sha256:55c26955e770586e… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e43c9490fe513579369698586213e36c4c827f3f251eb66c4d440af44aca0ed8 · sha256:55c26955e770586e… · /containers/adp/0/problemTypes/0/descriptions/0
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e43c9490fe513579369698586213e36c4c827f3f251eb66c4d440af44aca0ed8 · sha256:55c26955e770586e… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"https://github.com/fr3akhacks/cve-disclosures/blob/master/osTicket/CVE-2026-38444.md"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e43c9490fe513579369698586213e36c4c827f3f251eb66c4d440af44aca0ed8 · sha256:55c26955e770586e… · /containers/cna/references/2
{"url":"https://github.com/osTicket/osTicket/blob/develop/include/class.mailparse.php"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e43c9490fe513579369698586213e36c4c827f3f251eb66c4d440af44aca0ed8 · sha256:55c26955e770586e… · /containers/cna/references/0
{"url":"https://github.com/osTicket/osTicket/commit/c54a6ac79de42cff35b453882d1d94cd38adb17f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e43c9490fe513579369698586213e36c4c827f3f251eb66c4d440af44aca0ed8 · sha256:55c26955e770586e… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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