CVE-2026-63770

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-20. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

Glance through 0.8.5 contains an IP address spoofing vulnerability in the authentication handler that allows unauthenticated attackers to bypass brute-force lockout protections by supplying arbitrary values in the X-Forwarded-For request header when the server proxied option is enabled. Attackers can manipulate the leftmost value of the X-Forwarded-For header to make each login attempt appear to originate from a distinct IP address, preventing the per-IP failed-login counter from reaching the lockout threshold and enabling unlimited credential guessing against the authentication endpoint.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: 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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

July 20, 2026

Last Modified

August 21, 2026

Advisory Details (3)

Auto-updated Jul 20, 2026
No patch confirmed yet. Sources: github_pr.
generic

Glance 0.8.5 IP Spoofing Authentication Brute-Force Protection Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/glance-ip-spoofing-authentication-brute-force-protection-bypass
github_pr

fix: use last IP from X-Forwarded-For to prevent rate limit bypass

Upstream fix in progress (PR #1033 · glanceapp/glance, state=open)

https://github.com/glanceapp/glance/pull/1033
generic

Authentication Rate Limit Bypass via X-Forwarded-For Spoofing · Issue #1031 · glanceapp/glance · GitHub

https://github.com/glanceapp/glance/issues/1031

Vendor Advisories for CVE-2026-63770(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 19× in last 7d / 92× 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 184 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-63770?
CVE-2026-63770 is a high vulnerability published on July 20, 2026. Glance through 0.8.5 contains an IP address spoofing vulnerability in the authentication handler that allows unauthenticated attackers to bypass brute-force lockout protections by supplying arbitrary values in the X-Forwarded-For request header when the server proxied option is enabled. Attackers…
When was CVE-2026-63770 disclosed?
CVE-2026-63770 was first published in the National Vulnerability Database on July 20, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63770 actively exploited?
CVE-2026-63770 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 78.1% of all scored CVEs.
What is the CVSS score of CVE-2026-63770?
CVE-2026-63770 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-63770?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63770, 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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