CVE-2026-49357

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 76% 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
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

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

Line Desktop MCP is a project that, while unaffiliated with the official line-bot-mcp-server, allows users to directly operate the LINE Desktop application on Windows or Mac via MCP. line-desktop-mcp supports a --http-mode Streamable HTTP transport for use with clients such as n8n. In this mode the server binds to 0.0.0.0 and exposes the MCP /mcp endpoint without an MCP-layer authentication check. Prior to version 1.1.2, any network client that can reach the port can initialize a session, list tools, and call tools that read LINE Desktop chat history or send LINE messages through the already logged-in desktop application. Version 1.1.2 fixes the issue.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
24.1%
KEV
Not listed

Published

June 19, 2026

Last Modified

June 23, 2026

Advisory Details (2)

Auto-updated Jun 19, 2026
Patch available. Sources: github_commit, github.
github Patch Available

Streamable HTTP mode exposes LINE Desktop read/send tools without MCP authentication · Advisory · dtwang/line-desktop-mcp · GitHub

https://github.com/dtwang/line-desktop-mcp/security/advisories/GHSA-4hf8-5mjm-rfgq
github_commit

commit 680617894981 (dtwang/line-desktop-mcp)

Fix landed in dtwang/line-desktop-mcp commit 680617894981 — awaiting tagged release

https://github.com/dtwang/line-desktop-mcp/commit/680617894981ea93f8f6ceb51ecde7519754d501

Vendor Advisories for CVE-2026-49357(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 20× 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. 2026-07-07 07:02 UTCEG score recompute
  2. 2026-07-06 19:00 UTCEG score recompute
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 05:38 UTCEG score recompute
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-05 17:36 UTCEG score recompute
  7. 2026-07-05 05:34 UTCEG score recompute
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 16:53 UTCEG score recompute
  10. 2026-07-04 06:31 UTCEPSS rescore
  11. 2026-07-04 04:34 UTCEG score recompute
  12. 2026-07-03 16:20 UTCEG score recompute
  13. 2026-07-03 04:18 UTCEG score recompute
  14. 2026-07-02 16:17 UTCEG score recompute
  15. 2026-07-02 04:15 UTCEG score recompute
  16. 2026-07-01 16:14 UTCEG score recompute
  17. 2026-07-01 15:07 UTCEPSS rescore
  18. 2026-07-01 04:13 UTCEG score recompute
  19. 2026-06-30 23:22 UTCEPSS rescore
  20. 2026-06-30 16:12 UTCEG score recompute
  21. 2026-06-30 04:10 UTCEG score recompute
  22. 2026-06-29 16:08 UTCEG score recompute
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-29 14:06 UTCEPSS rescore
  25. 2026-06-29 04:07 UTCEG score recompute
Show 28 more
  1. 2026-06-28 16:04 UTCEG score recompute
  2. 2026-06-28 14:07 UTCEPSS rescore
  3. 2026-06-28 04:56 UTCEPSS rescore
  4. 2026-06-28 04:56 UTCEPSS rescore
  5. 2026-06-28 04:01 UTCEG score recompute
  6. 2026-06-27 16:00 UTCEG score recompute
  7. 2026-06-27 03:58 UTCEG score recompute
  8. 2026-06-27 03:08 UTCEPSS rescore
  9. 2026-06-26 15:57 UTCEG score recompute
  10. 2026-06-26 03:56 UTCEG score recompute
  11. 2026-06-25 15:55 UTCEG score recompute
  12. 2026-06-25 13:49 UTCEPSS rescore
  13. 2026-06-25 03:47 UTCEG score recompute
  14. 2026-06-24 15:45 UTCEG score recompute
  15. 2026-06-24 14:05 UTCEPSS rescore
  16. 2026-06-24 03:44 UTCEG score recompute
  17. 2026-06-23 21:33 UTCEPSS rescore
  18. 2026-06-23 21:33 UTCEPSS rescore
  19. 2026-06-23 15:38 UTCEG score recompute
  20. 2026-06-23 03:34 UTCEG score recompute
  21. 2026-06-22 15:30 UTCEG score recompute
  22. 2026-06-22 03:26 UTCEG score recompute
  23. 2026-06-21 15:25 UTCEG score recompute
  24. 2026-06-21 03:24 UTCEG score recompute
  25. 2026-06-20 15:23 UTCEG score recompute
  26. 2026-06-20 03:21 UTCEG score recompute
  27. 2026-06-19 15:16 UTCEG score recompute
  28. 2026-06-19 15:14 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-49357?
CVE-2026-49357 is a high vulnerability published on June 19, 2026. Line Desktop MCP is a project that, while unaffiliated with the official line-bot-mcp-server, allows users to directly operate the LINE Desktop application on Windows or Mac via MCP. line-desktop-mcp supports a --http-mode Streamable HTTP transport for use with clients such as n8n. In this mode the…
When was CVE-2026-49357 disclosed?
CVE-2026-49357 was first published in the National Vulnerability Database on June 19, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49357 actively exploited?
CVE-2026-49357 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 24.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-49357?
CVE-2026-49357 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-49357?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49357, 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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