CVE-2026-65056

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-07-21. a secondary CVSS source baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: Elevated riskExposed: 0

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

mcp-webresearch 0.1.7 contains a server-side request forgery vulnerability that allows attackers to access internal network services by supplying loopback, link-local, or cloud metadata addresses to the visit_page tool, which only validates the URL protocol without filtering private or reserved IP ranges. Attackers can steer the LLM-controlled URL argument through prompt injection to navigate the server's Playwright browser to internal endpoints such as cloud instance metadata services, causing the server to return sensitive internal page content including credentials into the model context.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
53(Track)
EG Risk 53/100SSVC: 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
Severity82% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

July 21, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated Jul 21, 2026
No patch confirmed yet.
generic

mcp-webresearch Server-Side Request Forgery in visit_page Due to Missing Internal-IP Filtering | Advisories | VulnCheck

https://www.vulncheck.com/advisories/mcp-webresearch-server-side-request-forgery-in-visit-page-due-to-missing-internal-ip-filtering
generic

oss/mcp-webresearch.md at main · geo-chen/oss · GitHub

https://github.com/geo-chen/oss/blob/main/mcp-webresearch.md

Vendor Advisories for CVE-2026-65056(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 14× in last 7d / 75× 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.

Showing the most recent 100 of 203 total refreshes for this CVE.

  1. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 05:55 UTCEG score recompute
  3. 2026-09-20 05:55 UTCGHSA enrichment
  4. 2026-09-19 00:19 UTCEG score recompute
  5. 2026-09-19 00:19 UTCGHSA enrichment
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-18 03:47 UTCEG score recompute
  8. 2026-09-18 03:47 UTCGHSA enrichment
  9. 2026-09-17 05:05 UTCEG score recompute
  10. 2026-09-17 05:05 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 12:35 UTCEG score recompute
  13. 2026-09-16 12:35 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-14 03:36 UTCEG score recompute
  16. 2026-09-14 03:36 UTCGHSA enrichment
  17. 2026-09-13 16:44 UTCGHSA enrichment
  18. 2026-09-13 05:51 UTCGHSA enrichment
  19. 2026-09-12 18:58 UTCEG score recompute
  20. 2026-09-12 18:58 UTCGHSA enrichment
  21. 2026-09-12 07:24 UTCGHSA enrichment
  22. 2026-09-11 20:31 UTCEG score recompute
  23. 2026-09-11 20:31 UTCGHSA enrichment
  24. 2026-09-11 14:53 UTCEPSS rescore
  25. 2026-09-11 09:37 UTCEPSS rescore
Show 75 more
  1. 2026-09-11 08:56 UTCEG score recompute
  2. 2026-09-11 08:56 UTCGHSA enrichment
  3. 2026-09-09 11:13 UTCEG score recompute
  4. 2026-09-09 11:13 UTCGHSA enrichment
  5. 2026-09-08 22:01 UTCEPSS rescore
  6. 2026-09-07 22:30 UTCEG score recompute
  7. 2026-09-07 22:30 UTCGHSA enrichment
  8. 2026-09-07 16:01 UTCEPSS rescore
  9. 2026-09-06 13:47 UTCEPSS rescore
  10. 2026-09-06 10:41 UTCGHSA enrichment
  11. 2026-09-05 19:50 UTCEG score recompute
  12. 2026-09-05 19:50 UTCGHSA enrichment
  13. 2026-09-05 15:31 UTCEPSS rescore
  14. 2026-09-05 08:28 UTCEG score recompute
  15. 2026-09-05 08:28 UTCGHSA enrichment
  16. 2026-09-04 05:07 UTCEPSS rescore
  17. 2026-09-02 14:12 UTCEPSS rescore
  18. 2026-09-02 00:55 UTCEG score recompute
  19. 2026-09-02 00:55 UTCGHSA enrichment
  20. 2026-09-01 13:54 UTCEPSS rescore
  21. 2026-09-01 04:40 UTCEPSS rescore
  22. 2026-08-30 23:56 UTCEG score recompute
  23. 2026-08-30 23:56 UTCGHSA enrichment
  24. 2026-08-30 19:17 UTCEPSS rescore
  25. 2026-08-30 13:03 UTCGHSA enrichment
  26. 2026-08-30 02:10 UTCEG score recompute
  27. 2026-08-30 02:10 UTCGHSA enrichment
  28. 2026-08-30 01:22 UTCEPSS rescore
  29. 2026-08-28 21:42 UTCEPSS rescore
  30. 2026-08-27 22:06 UTCEG score recompute
  31. 2026-08-27 22:06 UTCGHSA enrichment
  32. 2026-08-27 11:14 UTCGHSA enrichment
  33. 2026-08-26 21:28 UTCEG score recompute
  34. 2026-08-26 21:28 UTCGHSA enrichment
  35. 2026-08-26 14:47 UTCEPSS rescore
  36. 2026-08-26 07:14 UTCGHSA enrichment
  37. 2026-08-25 20:11 UTCEG score recompute
  38. 2026-08-25 20:11 UTCGHSA enrichment
  39. 2026-08-25 13:49 UTCEPSS rescore
  40. 2026-08-25 09:11 UTCGHSA enrichment
  41. 2026-08-24 22:18 UTCEG score recompute
  42. 2026-08-24 22:18 UTCGHSA enrichment
  43. 2026-08-24 11:25 UTCEG score recompute
  44. 2026-08-24 11:25 UTCGHSA enrichment
  45. 2026-08-24 00:32 UTCGHSA enrichment
  46. 2026-08-23 13:40 UTCGHSA enrichment
  47. 2026-08-23 02:47 UTCEG score recompute
  48. 2026-08-23 02:47 UTCGHSA enrichment
  49. 2026-08-23 00:19 UTCEPSS rescore
  50. 2026-08-22 15:54 UTCGHSA enrichment
  51. 2026-08-22 04:54 UTCEG score recompute
  52. 2026-08-22 04:54 UTCGHSA enrichment
  53. 2026-08-21 23:49 UTCEPSS rescore
  54. 2026-08-21 18:01 UTCGHSA enrichment
  55. 2026-08-21 07:08 UTCEG score recompute
  56. 2026-08-21 07:08 UTCGHSA enrichment
  57. 2026-08-20 22:55 UTCEPSS rescore
  58. 2026-08-20 20:15 UTCGHSA enrichment
  59. 2026-08-20 09:22 UTCGHSA enrichment
  60. 2026-08-19 22:30 UTCEG score recompute
  61. 2026-08-19 22:30 UTCGHSA enrichment
  62. 2026-08-19 17:04 UTCEPSS rescore
  63. 2026-08-19 07:37 UTCGHSA enrichment
  64. 2026-08-18 20:34 UTCEG score recompute
  65. 2026-08-18 20:34 UTCGHSA enrichment
  66. 2026-08-18 13:48 UTCEPSS rescore
  67. 2026-08-18 09:42 UTCGHSA enrichment
  68. 2026-08-17 22:49 UTCEG score recompute
  69. 2026-08-17 22:49 UTCGHSA enrichment
  70. 2026-08-17 13:47 UTCEPSS rescore
  71. 2026-08-17 11:56 UTCGHSA enrichment
  72. 2026-08-17 01:04 UTCEG score recompute
  73. 2026-08-17 01:04 UTCGHSA enrichment
  74. 2026-08-16 14:56 UTCEPSS rescore
  75. 2026-08-16 14:11 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-65056?
CVE-2026-65056 is a high vulnerability published on July 21, 2026. mcp-webresearch 0.1.7 contains a server-side request forgery vulnerability that allows attackers to access internal network services by supplying loopback, link-local, or cloud metadata addresses to the visit_page tool, which only validates the URL protocol without filtering private or reserved IP…
When was CVE-2026-65056 disclosed?
CVE-2026-65056 was first published in the National Vulnerability Database on July 21, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65056 actively exploited?
CVE-2026-65056 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 65.1% of all scored CVEs.
What is the CVSS score of CVE-2026-65056?
CVE-2026-65056 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-65056?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-65056, 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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