CVE-2026-38444

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-08-03. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.1
EG Score
6.1(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity61% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

August 3, 2026

Last Modified

August 3, 2026

Advisory Details (3)

Auto-updated Aug 3, 2026
Patch available. Sources: github_commit.
generic

cve-disclosures/osTicket/CVE-2026-38444.md at master · fr3akhacks/cve-disclosures · GitHub

https://github.com/fr3akhacks/cve-disclosures/blob/master/osTicket/CVE-2026-38444.md
github_commit Patch Available

commit c54a6ac79de4 (osTicket/osTicket)

Patch available: osTicket/osTicket v1.17.8 (contains commit c54a6ac79de4)

https://github.com/osTicket/osTicket/commit/c54a6ac79de42cff35b453882d1d94cd38adb17f
generic

osTicket/include/class.mailparse.php at develop · osTicket/osTicket · GitHub

https://github.com/osTicket/osTicket/blob/develop/include/class.mailparse.php

Vendor Advisories for CVE-2026-38444(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 21× in last 7d / 53× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-21 05:10 UTCEG score recompute
  2. 2026-08-21 05:10 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 03:07 UTCEG score recompute
  5. 2026-08-20 03:07 UTCGHSA enrichment
  6. 2026-08-19 17:03 UTCEPSS rescore
  7. 2026-08-19 01:03 UTCEG score recompute
  8. 2026-08-19 01:03 UTCGHSA enrichment
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-17 23:01 UTCEG score recompute
  11. 2026-08-17 23:00 UTCGHSA enrichment
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-16 20:58 UTCEG score recompute
  14. 2026-08-16 20:58 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 02:14 UTCEPSS rescore
  17. 2026-08-15 18:56 UTCEG score recompute
  18. 2026-08-15 18:56 UTCGHSA enrichment
  19. 2026-08-15 01:30 UTCEPSS rescore
  20. 2026-08-14 16:53 UTCEG score recompute
  21. 2026-08-14 16:53 UTCGHSA enrichment
  22. 2026-08-13 22:00 UTCEPSS rescore
  23. 2026-08-13 14:42 UTCEG score recompute
  24. 2026-08-13 14:42 UTCGHSA enrichment
  25. 2026-08-12 13:51 UTCEPSS rescore
Show 28 more
  1. 2026-08-12 12:40 UTCEG score recompute
  2. 2026-08-12 12:40 UTCGHSA enrichment
  3. 2026-08-11 13:43 UTCEPSS rescore
  4. 2026-08-11 10:37 UTCEG score recompute
  5. 2026-08-11 10:37 UTCGHSA enrichment
  6. 2026-08-11 00:00 UTCEPSS rescore
  7. 2026-08-10 08:35 UTCEG score recompute
  8. 2026-08-10 08:35 UTCGHSA enrichment
  9. 2026-08-09 13:46 UTCEPSS rescore
  10. 2026-08-09 06:32 UTCEG score recompute
  11. 2026-08-09 06:32 UTCGHSA enrichment
  12. 2026-08-08 16:37 UTCEPSS rescore
  13. 2026-08-08 04:30 UTCEG score recompute
  14. 2026-08-08 04:30 UTCGHSA enrichment
  15. 2026-08-07 02:27 UTCEG score recompute
  16. 2026-08-07 02:27 UTCGHSA enrichment
  17. 2026-08-06 13:46 UTCEPSS rescore
  18. 2026-08-06 00:24 UTCEG score recompute
  19. 2026-08-06 00:24 UTCGHSA enrichment
  20. 2026-08-05 19:17 UTCEPSS rescore
  21. 2026-08-04 22:22 UTCEG score recompute
  22. 2026-08-04 22:22 UTCGHSA enrichment
  23. 2026-08-04 15:10 UTCEPSS rescore
  24. 2026-08-03 19:38 UTCEG score recompute▲ 6.10
  25. 2026-08-03 19:38 UTCMITRE cvelistV5CVSS v3 → 6.1 · severity → MEDIUM
  26. 2026-08-03 19:18 UTCNVD update
  27. 2026-08-03 18:23 UTCEG score recompute
  28. 2026-08-03 18:23 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-38444?
CVE-2026-38444 is a medium vulnerability published on August 3, 2026. 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 ostthreadentry. When an unauthenticated attacker sends a reply email to an…
When was CVE-2026-38444 disclosed?
CVE-2026-38444 was first published in the National Vulnerability Database on August 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-38444 actively exploited?
CVE-2026-38444 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 76.8% of all scored CVEs.
What is the CVSS score of CVE-2026-38444?
CVE-2026-38444 has a CVSS v3.1 base score of 6.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-38444?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-38444, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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