CVE-2026-59723

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: 0.1%, top 96% 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
Trending — 3 sources updated this weekElevated
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.

Cline is an autonomous coding agent as an SDK, IDE extension, or CLI assistant. Prior to 3.0.30, the Cline Hub dashboard server launched by the cline dashboard command accepts WebSocket connections on the /browser endpoint without validating the Origin header, and when ROOM_SECRET is unset for local 127.0.0.1 binds, isAuthorizedBrowserRequest() allows attacker-controlled websites to send desktopCommand frames that read workspace state, mutate MCP and provider settings, and trigger command execution when a provider or model is configured. This issue is fixed in version 3.0.30.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
4.1%
KEV
Not listed

Published

July 8, 2026

Last Modified

July 10, 2026

Advisory Details (4)

Auto-updated Jul 8, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github, github_pr, github_commit.
github_release Patch Available

CLI v3.0.30

Patch available: cline/cline cli-v3.0.30

https://github.com/cline/cline/releases/tag/cli-v3.0.30
github_commit Patch Available

commit d09270940f57 (cline/cline)

Patch available: cline/cline cli-v3.0.30 (contains commit d09270940f57)

https://github.com/cline/cline/commit/d09270940f5746f288cfc4a5039b46a2f4d5d01e
github_pr Patch Available

fix(hub): validate dashboard websocket host and origin

Patch available: cline/cline cli-v3.0.30 (PR #11724 merged 2026-06-23)

https://github.com/cline/cline/pull/11724
github Patch Available🟡 PoC Available

Cross-Origin WebSocket Hijacking in Cline Hub Dashboard (`/browser` endpoint) · Advisory · cline/cline · GitHub

https://github.com/cline/cline/security/advisories/GHSA-3cj3-hqcr-g934

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 13× 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. 2026-07-12 05:46 UTCEPSS rescore
  2. 2026-07-11 22:41 UTCEG score recompute
  3. 2026-07-11 10:40 UTCEG score recompute
  4. 2026-07-11 08:27 UTCEPSS rescore
  5. 2026-07-11 08:27 UTCEPSS rescore
  6. 2026-07-10 22:39 UTCEG score recompute
  7. 2026-07-10 10:37 UTCEG score recompute
  8. 2026-07-09 22:32 UTCEG score recompute
  9. 2026-07-09 19:10 UTCEPSS rescore
  10. 2026-07-09 19:10 UTCEPSS rescore
  11. 2026-07-09 10:31 UTCEG score recompute
  12. 2026-07-08 22:29 UTCEG score recompute
  13. 2026-07-08 22:29 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-59723?
CVE-2026-59723 is a high vulnerability published on July 8, 2026. Cline is an autonomous coding agent as an SDK, IDE extension, or CLI assistant. Prior to 3.0.30, the Cline Hub dashboard server launched by the cline dashboard command accepts WebSocket connections on the /browser endpoint without validating the Origin header, and when ROOM_SECRET is unset for…
When was CVE-2026-59723 disclosed?
CVE-2026-59723 was first published in the National Vulnerability Database on July 8, 2026, with the most recent update on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59723 actively exploited?
CVE-2026-59723 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-59723?
CVE-2026-59723 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-59723?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59723, 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.

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