CVE-2025-71403

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH 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%CVSS: 7.1Exploit: None knownExposed: 0

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

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
7.1(high)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

August 1, 2026

Last Modified

August 3, 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 rangeFixed inDependents
better-auth—1.1.21—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 29× in last 7d / 81× 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. 2026-08-20 18:11 UTCGHSA enrichment
  2. 2026-08-20 06:36 UTCGHSA enrichment
  3. 2026-08-19 19:03 UTCEG score recompute
  4. 2026-08-19 19:03 UTCGHSA enrichment
  5. 2026-08-19 17:03 UTCEPSS rescore
  6. 2026-08-19 06:24 UTCGHSA enrichment
  7. 2026-08-18 18:44 UTCEG score recompute
  8. 2026-08-18 18:44 UTCGHSA enrichment
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-18 07:11 UTCGHSA enrichment
  11. 2026-08-17 19:39 UTCEG score recompute
  12. 2026-08-17 19:38 UTCGHSA enrichment
  13. 2026-08-17 13:46 UTCEPSS rescore
  14. 2026-08-17 06:38 UTCGHSA enrichment
  15. 2026-08-16 19:06 UTCEG score recompute
  16. 2026-08-16 19:06 UTCGHSA enrichment
  17. 2026-08-16 14:55 UTCEPSS rescore
  18. 2026-08-16 07:33 UTCEG score recompute
  19. 2026-08-16 07:33 UTCGHSA enrichment
  20. 2026-08-16 02:14 UTCEPSS rescore
  21. 2026-08-15 20:01 UTCGHSA enrichment
  22. 2026-08-15 08:28 UTCEG score recompute
  23. 2026-08-15 08:28 UTCGHSA enrichment
  24. 2026-08-15 01:30 UTCEPSS rescore
  25. 2026-08-14 20:55 UTCGHSA enrichment
Show 56 more
  1. 2026-08-14 09:23 UTCEG score recompute
  2. 2026-08-14 09:23 UTCGHSA enrichment
  3. 2026-08-13 22:00 UTCEPSS rescore
  4. 2026-08-13 21:50 UTCGHSA enrichment
  5. 2026-08-13 10:17 UTCGHSA enrichment
  6. 2026-08-12 22:44 UTCEG score recompute
  7. 2026-08-12 22:44 UTCGHSA enrichment
  8. 2026-08-12 13:50 UTCEPSS rescore
  9. 2026-08-12 11:12 UTCGHSA enrichment
  10. 2026-08-11 23:38 UTCEG score recompute
  11. 2026-08-11 23:38 UTCGHSA enrichment
  12. 2026-08-11 13:42 UTCEPSS rescore
  13. 2026-08-11 12:06 UTCGHSA enrichment
  14. 2026-08-11 00:32 UTCEG score recompute
  15. 2026-08-11 00:32 UTCGHSA enrichment
  16. 2026-08-10 23:59 UTCEPSS rescore
  17. 2026-08-10 13:00 UTCGHSA enrichment
  18. 2026-08-10 01:27 UTCGHSA enrichment
  19. 2026-08-09 13:55 UTCEG score recompute
  20. 2026-08-09 13:55 UTCGHSA enrichment
  21. 2026-08-09 13:46 UTCEPSS rescore
  22. 2026-08-09 02:22 UTCEG score recompute
  23. 2026-08-09 02:22 UTCGHSA enrichment
  24. 2026-08-08 16:36 UTCEPSS rescore
  25. 2026-08-08 14:50 UTCGHSA enrichment
  26. 2026-08-08 03:17 UTCEG score recompute
  27. 2026-08-08 03:17 UTCGHSA enrichment
  28. 2026-08-07 16:27 UTCEPSS rescore
  29. 2026-08-07 15:44 UTCGHSA enrichment
  30. 2026-08-07 04:11 UTCGHSA enrichment
  31. 2026-08-06 16:38 UTCEG score recompute
  32. 2026-08-06 16:38 UTCGHSA enrichment
  33. 2026-08-06 13:46 UTCEPSS rescore
  34. 2026-08-06 05:05 UTCEG score recompute
  35. 2026-08-06 05:05 UTCGHSA enrichment
  36. 2026-08-05 19:17 UTCEPSS rescore
  37. 2026-08-05 17:32 UTCGHSA enrichment
  38. 2026-08-05 05:59 UTCGHSA enrichment
  39. 2026-08-04 18:26 UTCEG score recompute
  40. 2026-08-04 18:26 UTCGHSA enrichment
  41. 2026-08-04 10:37 UTCEPSS rescore
  42. 2026-08-04 06:53 UTCGHSA enrichment
  43. 2026-08-03 19:19 UTCEG score recompute
  44. 2026-08-03 19:19 UTCGHSA enrichment
  45. 2026-08-03 18:23 UTCEG score recompute
  46. 2026-08-03 18:23 UTCGHSA enrichment
  47. 2026-08-03 11:31 UTCEG score recompute
  48. 2026-08-03 11:30 UTCGHSA enrichment
  49. 2026-08-03 10:35 UTCEPSS rescore
  50. 2026-08-02 23:56 UTCGHSA enrichment
  51. 2026-08-02 12:24 UTCGHSA enrichment
  52. 2026-08-02 00:51 UTCEG score recompute
  53. 2026-08-02 00:51 UTCGHSA enrichment
  54. 2026-08-01 13:18 UTCEG score recompute
  55. 2026-08-01 12:43 UTCEG score recompute
  56. 2026-08-01 12:42 UTCMITRE cvelistV5first tracked

Related CVEs(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 in the National Vulnerability Database on August 1, 2026, with the most recent update on August 3, 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% probability of exploitation in the next 30 days, which ranks it in the top 84.9% of all scored CVEs.
What is the CVSS score of CVE-2025-71403?
CVE-2025-71403 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2025-71403?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-71403, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-71403

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