CVE-2026-67201

HIGHPre-NVD 8.68.6—
EchelonGraph scoreHIGH confidence

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2026-07-29. a secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.6Exploit: Elevated riskExposed: 0

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

V through 0.5.2, fixed in commit 85859f0, contains a server-side request forgery (SSRF) bypass vulnerability that allows attackers to circumvent host-based allowlists by exploiting a parser differential between net.urllib and net.http. Attackers can craft a URL containing a backslash in the authority section such that net.urllib.parse() extracts the trusted host for allowlist validation while net.http.get() normalizes the backslash and connects to the internal host, enabling access to internal network services that the allowlist was intended to block.

CVSS v3
8.6
EG Score
8.6(high)
EG Risk
70(Attend)
EG Risk 70/100SSVC: Attend

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
Severity86% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

July 29, 2026

Last Modified

July 30, 2026

Advisory Details (4)

Auto-updated Jul 29, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
generic

V 0.5.2 SSRF Bypass via Parser Differential in net.urllib and net.http | Advisories | VulnCheck

https://www.vulncheck.com/advisories/v-ssrf-bypass-via-parser-differential-in-net-urllib-and-net-http
github_commit

commit 85859f0f3498 (vlang/v)

Fix landed in vlang/v commit 85859f0f3498 — awaiting tagged release

https://github.com/vlang/v/commit/85859f0f3498d4091b38009c45ed390a97eeedc2
github_pr

net.urllib: reject backslashes in URL authorities

Fix merged in vlang/v PR #27947 on 2026-07-26 — awaiting tagged release

https://github.com/vlang/v/pull/27947
generic

Security: SSRF in net.urllib due to backslash (\) parsing · Issue #27945 · vlang/v · GitHub

https://github.com/vlang/v/issues/27945

Vendor Advisories for CVE-2026-67201(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 26× in last 7d / 107× 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 107 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-67201?
CVE-2026-67201 is a high vulnerability published on July 29, 2026. V through 0.5.2, fixed in commit 85859f0, contains a server-side request forgery (SSRF) bypass vulnerability that allows attackers to circumvent host-based allowlists by exploiting a parser differential between net.urllib and net.http. Attackers can craft a URL containing a backslash in the…
When was CVE-2026-67201 disclosed?
CVE-2026-67201 was first published in the National Vulnerability Database on July 29, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67201 actively exploited?
CVE-2026-67201 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 68.1% of all scored CVEs.
What is the CVSS score of CVE-2026-67201?
CVE-2026-67201 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-67201?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-67201, 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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