CVE-2026-48778

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 1.3%, top 33% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.8Exploit: NoneExposed: 0

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

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, the tag in config.xml is read by NppXml::value() (Parameters.cpp:6430) and stored in _nppGUI._commandLineInterpreter without any validation, whitelist, or digital signature check. When the user triggers IDM_FILE_OPEN_CMD (File → Open Containing Folder → cmd), NppCommands.cpp:228 creates a Command object with this value and calls run(), which invokes ShellExecute (RunDlg.cpp:221) with the attacker-controlled string as the executable path. This vulnerability is fixed in 8.9.6.1.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
67.5%
KEV
Not listed

Published

June 26, 2026

Last Modified

June 29, 2026

Advisory Details (2)

Auto-updated Jun 26, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github.
github Patch Available🟡 PoC Available

Arbitrary Code Execution via "commandLineInterpreter" of config.xml · Advisory · notepad-plus-plus/notepad-plus-plus · GitHub

https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-7hm3-wp5q-ccv9
github_commit

commit 24c7b5c63cec (notepad-plus-plus/notepad-plus-plus)

Fix landed in notepad-plus-plus/notepad-plus-plus commit 24c7b5c63cec — awaiting tagged release

https://github.com/notepad-plus-plus/notepad-plus-plus/commit/24c7b5c63cece76dbc8c4f2607a27ebfe22fa614

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 63× 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. 2026-07-15 23:48 UTCEG score recompute
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 12:39 UTCEG score recompute
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-15 01:26 UTCEG score recompute
  6. 2026-07-14 14:17 UTCEG score recompute
  7. 2026-07-14 03:06 UTCEG score recompute
  8. 2026-07-13 22:30 UTCEPSS rescore
  9. 2026-07-13 15:57 UTCEG score recompute
  10. 2026-07-13 06:13 UTCEPSS rescore
  11. 2026-07-13 04:45 UTCEG score recompute
  12. 2026-07-12 17:36 UTCEG score recompute
  13. 2026-07-12 06:25 UTCEG score recompute
  14. 2026-07-12 05:46 UTCEPSS rescore
  15. 2026-07-11 19:16 UTCEG score recompute
  16. 2026-07-11 08:27 UTCEPSS rescore
  17. 2026-07-11 08:07 UTCEG score recompute
  18. 2026-07-10 20:57 UTCEG score recompute
  19. 2026-07-10 09:48 UTCEG score recompute
  20. 2026-07-09 22:39 UTCEG score recompute
  21. 2026-07-09 19:10 UTCEPSS rescore
  22. 2026-07-09 11:29 UTCEG score recompute
  23. 2026-07-09 00:18 UTCEG score recompute
  24. 2026-07-08 15:16 UTCEPSS rescore
  25. 2026-07-08 13:09 UTCEG score recompute
Show 38 more
  1. 2026-07-08 01:58 UTCEG score recompute
  2. 2026-07-07 14:48 UTCEG score recompute
  3. 2026-07-07 13:46 UTCEPSS rescore
  4. 2026-07-07 03:26 UTCEG score recompute
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 16:16 UTCEG score recompute
  7. 2026-07-06 05:04 UTCEG score recompute
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 17:53 UTCEG score recompute
  10. 2026-07-05 06:44 UTCEG score recompute
  11. 2026-07-05 02:30 UTCEPSS rescore
  12. 2026-07-04 19:33 UTCEG score recompute
  13. 2026-07-04 08:22 UTCEG score recompute
  14. 2026-07-04 06:31 UTCEPSS rescore
  15. 2026-07-03 21:13 UTCEG score recompute
  16. 2026-07-03 10:04 UTCEG score recompute
  17. 2026-07-02 22:53 UTCEG score recompute
  18. 2026-07-02 11:43 UTCEG score recompute
  19. 2026-07-02 00:32 UTCEG score recompute
  20. 2026-07-01 15:07 UTCEPSS rescore
  21. 2026-07-01 13:23 UTCEG score recompute
  22. 2026-07-01 02:14 UTCEG score recompute
  23. 2026-06-30 23:22 UTCEPSS rescore
  24. 2026-06-30 15:05 UTCEG score recompute
  25. 2026-06-30 03:54 UTCEG score recompute
  26. 2026-06-29 16:44 UTCEG score recompute
  27. 2026-06-29 14:06 UTCEPSS rescore
  28. 2026-06-29 14:06 UTCEPSS rescore
  29. 2026-06-29 05:33 UTCEG score recompute
  30. 2026-06-28 18:22 UTCEG score recompute
  31. 2026-06-28 14:07 UTCEPSS rescore
  32. 2026-06-28 07:12 UTCEG score recompute
  33. 2026-06-28 04:56 UTCEPSS rescore
  34. 2026-06-28 04:56 UTCEPSS rescore
  35. 2026-06-27 20:03 UTCEG score recompute
  36. 2026-06-27 08:53 UTCEG score recompute
  37. 2026-06-26 21:43 UTCEG score recompute
  38. 2026-06-26 21:42 UTCNVD updatefirst tracked

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 GitHub PoC) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-52606
    First seen May 30, 2026

    Notepad++ 8.9.6 - Arbitrary Code Execution

    Open source ↗
  • GitHub PoCXK3NF4/CVE-2026-48778
    First seen May 30, 2026

    Notepad++ RCE via config.xml commandLineInterpreter

    Open source ↗

Frequently asked(5)

What is CVE-2026-48778?
CVE-2026-48778 is a high vulnerability published on June 26, 2026. Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, the <GUIConfig name="commandLineInterpreter"> tag in config.xml is read by NppXml::value() (Parameters.cpp:6430) and stored in nppGUI.commandLineInterpreter without any validation, whitelist, or digital signature check. When…
When was CVE-2026-48778 disclosed?
CVE-2026-48778 was first published in the National Vulnerability Database on June 26, 2026, with the most recent update on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48778 actively exploited?
CVE-2026-48778 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 67.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-48778?
CVE-2026-48778 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-48778?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48778, 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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