CVE-2026-38446

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.

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.

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
16%
KEV
Not listed

Published

August 3, 2026

Last Modified

August 3, 2026

Advisory Details (4)

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

commit 1e39bf1cf78f (osTicket/osTicket)

Patch available: osTicket/osTicket v1.17.8 (contains commit 1e39bf1cf78f)

https://github.com/osTicket/osTicket/commit/1e39bf1cf78fa298285f19b98f6a6dbb6808de19
generic

cve-disclosures/osTicket/CVE-2026-38446.md at master · fr3akhacks/cve-disclosures · GitHub

https://github.com/fr3akhacks/cve-disclosures/blob/master/osTicket/CVE-2026-38446.md
generic

osTicket/include/staff/templates/thread-entries.tmpl.php at v1.18.3 · osTicket/osTicket · GitHub

https://github.com/osTicket/osTicket/blob/v1.18.3/include/staff/templates/thread-entries.tmpl.php
generic

osTicket/include/staff/templates/thread-entry.tmpl.php at v1.18.3 · osTicket/osTicket · GitHub

https://github.com/osTicket/osTicket/blob/v1.18.3/include/staff/templates/thread-entry.tmpl.php#L84

Vendor Advisories for CVE-2026-38446(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 19× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 17:26 UTCGHSA enrichment
  3. 2026-08-19 19:01 UTCEG score recompute
  4. 2026-08-19 19:01 UTCGHSA enrichment
  5. 2026-08-19 17:03 UTCEPSS rescore
  6. 2026-08-18 18:57 UTCEG score recompute
  7. 2026-08-18 18:57 UTCGHSA enrichment
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-17 20:32 UTCEG score recompute
  10. 2026-08-17 20:32 UTCGHSA enrichment
  11. 2026-08-17 13:47 UTCEPSS rescore
  12. 2026-08-16 22:07 UTCEG score recompute
  13. 2026-08-16 22:07 UTCGHSA enrichment
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 02:14 UTCEPSS rescore
  16. 2026-08-15 23:42 UTCEG score recompute
  17. 2026-08-15 23:42 UTCGHSA enrichment
  18. 2026-08-15 01:30 UTCEPSS rescore
  19. 2026-08-15 01:17 UTCGHSA enrichment
  20. 2026-08-14 02:53 UTCEG score recompute
  21. 2026-08-14 02:53 UTCGHSA enrichment
  22. 2026-08-13 22:00 UTCEPSS rescore
  23. 2026-08-13 04:28 UTCEG score recompute
  24. 2026-08-13 04:28 UTCGHSA enrichment
  25. 2026-08-12 13:51 UTCEPSS rescore
Show 28 more
  1. 2026-08-12 06:04 UTCEG score recompute
  2. 2026-08-12 06:03 UTCGHSA enrichment
  3. 2026-08-11 13:43 UTCEPSS rescore
  4. 2026-08-11 07:38 UTCEG score recompute
  5. 2026-08-11 07:38 UTCGHSA enrichment
  6. 2026-08-11 00:00 UTCEPSS rescore
  7. 2026-08-10 09:13 UTCEG score recompute
  8. 2026-08-10 09:13 UTCGHSA enrichment
  9. 2026-08-09 13:46 UTCEPSS rescore
  10. 2026-08-09 10:49 UTCEG score recompute
  11. 2026-08-09 10:49 UTCGHSA enrichment
  12. 2026-08-08 16:37 UTCEPSS rescore
  13. 2026-08-08 12:24 UTCEG score recompute
  14. 2026-08-08 12:24 UTCGHSA enrichment
  15. 2026-08-07 13:59 UTCGHSA enrichment
  16. 2026-08-06 15:34 UTCEG score recompute
  17. 2026-08-06 15:34 UTCGHSA enrichment
  18. 2026-08-06 13:46 UTCEPSS rescore
  19. 2026-08-05 19:17 UTCEPSS rescore
  20. 2026-08-05 17:08 UTCGHSA enrichment
  21. 2026-08-04 18:44 UTCEG score recompute
  22. 2026-08-04 18:44 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-2026-38446?
CVE-2026-38446 is a medium vulnerability published on August 3, 2026. 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.…
When was CVE-2026-38446 disclosed?
CVE-2026-38446 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-2026-38446 actively exploited?
CVE-2026-38446 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 83.6% of all scored CVEs.
What is the CVSS score of CVE-2026-38446?
CVE-2026-38446 has a CVSS v3.1 base score of 6.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-38446?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-38446, 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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