CVE-2026-55762

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 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
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0

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

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, and 7.10.13, the POST /api/v1/fingerprint REST endpoint enforces authentication (authRequired: true) but performs no authorization check. Any authenticated user — including a standard user role account — can call this endpoint with {"setDeploymentAs": "new-workspace"} to permanently deregister the workspace from Rocket.Chat Cloud. This wipes all cloud credentials, removes the workspace license, breaks push notifications for all users, and requires manual re-registration to recover. This vulnerability is fixed in 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, and 7.10.13.

CVSS v3
8.1
EG Score
8.1(medium)
EPSS
24.3%
KEV
Not listed

Published

June 24, 2026

Last Modified

June 25, 2026

Advisory Details (1)

Auto-updated Jun 25, 2026
Patch available. Sources: github.
github Patch Available

Any Authenticated User Can Permanently Deregister Workspace from Rocket.Chat Cloud via Unprotected `/api/v1/fingerprint` Endpoint · Advisory · RocketChat/Rocket.Chat · GitHub

https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-8hhc-j325-rxqp

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 26× in last 7d / 73× 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 22:20 UTCEG score recompute
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 16:57 UTCEPSS rescore
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  20. 2026-07-11 05:08 UTCEG score recompute
  21. 2026-07-10 16:36 UTCEG score recompute
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  25. 2026-07-09 15:29 UTCEG score recompute
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  1. 2026-07-09 02:56 UTCEG score recompute
  2. 2026-07-08 15:16 UTCEPSS rescore
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  4. 2026-07-08 14:23 UTCEG score recompute
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  6. 2026-07-07 13:46 UTCEPSS rescore
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  17. 2026-07-05 02:31 UTCEPSS rescore
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  19. 2026-07-04 22:25 UTCEG score recompute
  20. 2026-07-04 09:52 UTCEG score recompute
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  22. 2026-07-03 08:47 UTCEG score recompute
  23. 2026-07-02 20:15 UTCEG score recompute
  24. 2026-07-02 07:43 UTCEG score recompute
  25. 2026-07-01 19:10 UTCEG score recompute
  26. 2026-07-01 15:07 UTCEPSS rescore
  27. 2026-07-01 06:38 UTCEG score recompute
  28. 2026-06-30 23:22 UTCEPSS rescore
  29. 2026-06-30 18:06 UTCEG score recompute
  30. 2026-06-30 05:33 UTCEG score recompute
  31. 2026-06-29 17:02 UTCEG score recompute
  32. 2026-06-29 14:06 UTCEPSS rescore
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  34. 2026-06-29 04:29 UTCEG score recompute
  35. 2026-06-28 15:54 UTCEG score recompute
  36. 2026-06-28 14:07 UTCEPSS rescore
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  39. 2026-06-28 03:22 UTCEG score recompute
  40. 2026-06-27 14:50 UTCEG score recompute
  41. 2026-06-27 03:08 UTCEPSS rescore
  42. 2026-06-27 02:17 UTCEG score recompute
  43. 2026-06-26 13:44 UTCEG score recompute
  44. 2026-06-26 01:12 UTCEG score recompute
  45. 2026-06-25 13:49 UTCEPSS rescore
  46. 2026-06-25 12:38 UTCEG score recompute
  47. 2026-06-25 00:06 UTCEG score recompute
  48. 2026-06-25 00:03 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-55762?
CVE-2026-55762 is a high vulnerability published on June 24, 2026. Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, and 7.10.13, the POST /api/v1/fingerprint REST endpoint enforces authentication (authRequired: true) but performs no authorization check. Any authenticated user —…
When was CVE-2026-55762 disclosed?
CVE-2026-55762 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55762 actively exploited?
CVE-2026-55762 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 24.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-55762?
CVE-2026-55762 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-55762?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55762, 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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