CVE-2025-71403

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-01. A secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

better-auth versions before 1.1.20 contain a bypass vulnerability in trustedOrigins validation logic affecting absolute URLs and wildcard domains. Attackers can construct malicious callbackURL parameters that pass origin checks and trigger open redirects to steal sensitive tokens for account takeover.

CVSS v3
7.1
EG Score
7.1HIGHmedium confidence
EG Risk
32
EG Risk 32/100CISA SSVC

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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
25th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 1, 2026

Last Modified

September 29, 2026

Advisory Details (2)

Auto-updated Aug 1, 2026
Patch available. Sources: github.
generic

better-auth before 1.1.20 Open Redirect via trustedOrigins Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/better-auth-before-open-redirect-via-trustedorigins-bypass
github Patch Available

Bypass trustedOrigins Protection leads to ATO · Advisory · better-auth/better-auth · GitHub

https://github.com/better-auth/better-auth/security/advisories/GHSA-vp58-j275-797x

Vendor Advisories for CVE-2025-71403(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
better-auth—
  • every version up to 1.1.21: fixed in 1.1.21
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 90× 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 222 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2025-71403?
CVE-2025-71403 is a high vulnerability published on August 1, 2026. better-auth versions before 1.1.20 contain a bypass vulnerability in trustedOrigins validation logic affecting absolute URLs and wildcard domains. Attackers can construct malicious callbackURL parameters that pass origin checks and trigger open redirects to steal sensitive tokens for account…
When was CVE-2025-71403 disclosed?
CVE-2025-71403 was first published on August 1, 2026, with the most recent update on September 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-71403 actively exploited?
CVE-2025-71403 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (25th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-71403?
CVE-2025-71403 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2025-71403?
A fix for CVE-2025-71403 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-71403 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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