CVE-2025-71404

MEDIUMPre-NVD 5.15.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 67% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
5.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.1Exploit: None knownExposed: 0

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

better-auth versions after v0.0.2 and before 1.1.16 contain a reflected cross-site scripting (XSS) vulnerability on the /api/auth/error page, where the value of the 'error' URL parameter is reflected as HTML without proper neutralization. An attacker who coerces a user into visiting a specially-crafted URL can execute arbitrary JavaScript in the context of the user's browser. The issue is fixed in version 1.1.16.

CVSS v3
5.1
EG Score
5.1(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity51% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

August 1, 2026

Last Modified

August 3, 2026

Advisory Details (3)

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

better-auth before 1.1.16 Reflected XSS via error parameter | Advisories | VulnCheck

https://www.vulncheck.com/advisories/better-auth-before-reflected-xss-via-error-parameter
github_commit

commit 05ada0b79dbc (better-auth/better-auth)

Fix landed in better-auth/better-auth commit 05ada0b79dbc — awaiting tagged release

https://github.com/better-auth/better-auth/commit/05ada0b79dbcac93cc04ceb79b23ca598d07830c
github Patch Available

URL parameter HTML Injection (Reflected Cross-Site scripting) · Advisory · better-auth/better-auth · GitHub

https://github.com/better-auth/better-auth/security/advisories/GHSA-9x4v-xfq5-m8x5

Vendor Advisories for CVE-2025-71404(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—1.1.16—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 58× 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 22:55 UTCEPSS rescore
  2. 2026-08-20 15:34 UTCEG score recompute
  3. 2026-08-20 15:34 UTCGHSA enrichment
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-19 14:12 UTCEG score recompute
  6. 2026-08-19 14:12 UTCGHSA enrichment
  7. 2026-08-18 13:48 UTCEPSS rescore
  8. 2026-08-18 12:51 UTCEG score recompute
  9. 2026-08-18 12:51 UTCGHSA enrichment
  10. 2026-08-17 13:46 UTCEPSS rescore
  11. 2026-08-17 11:14 UTCEG score recompute
  12. 2026-08-17 11:14 UTCGHSA enrichment
  13. 2026-08-16 14:55 UTCEPSS rescore
  14. 2026-08-16 09:52 UTCEG score recompute
  15. 2026-08-16 09:52 UTCGHSA enrichment
  16. 2026-08-16 02:14 UTCEPSS rescore
  17. 2026-08-15 08:32 UTCEG score recompute
  18. 2026-08-15 08:32 UTCGHSA enrichment
  19. 2026-08-15 01:30 UTCEPSS rescore
  20. 2026-08-14 07:11 UTCEG score recompute
  21. 2026-08-14 07:11 UTCGHSA enrichment
  22. 2026-08-13 22:00 UTCEPSS rescore
  23. 2026-08-13 05:51 UTCEG score recompute
  24. 2026-08-13 05:51 UTCGHSA enrichment
  25. 2026-08-12 13:50 UTCEPSS rescore
Show 33 more
  1. 2026-08-12 04:29 UTCEG score recompute
  2. 2026-08-12 04:29 UTCGHSA enrichment
  3. 2026-08-11 13:42 UTCEPSS rescore
  4. 2026-08-11 03:05 UTCEG score recompute
  5. 2026-08-11 03:05 UTCGHSA enrichment
  6. 2026-08-10 23:59 UTCEPSS rescore
  7. 2026-08-10 01:44 UTCEG score recompute
  8. 2026-08-10 01:44 UTCGHSA enrichment
  9. 2026-08-09 13:46 UTCEPSS rescore
  10. 2026-08-09 00:24 UTCEG score recompute
  11. 2026-08-09 00:24 UTCGHSA enrichment
  12. 2026-08-08 16:36 UTCEPSS rescore
  13. 2026-08-07 23:03 UTCEG score recompute
  14. 2026-08-07 23:03 UTCGHSA enrichment
  15. 2026-08-07 16:27 UTCEPSS rescore
  16. 2026-08-06 21:42 UTCEG score recompute
  17. 2026-08-06 21:42 UTCGHSA enrichment
  18. 2026-08-06 13:46 UTCEPSS rescore
  19. 2026-08-05 20:22 UTCEG score recompute
  20. 2026-08-05 20:22 UTCGHSA enrichment
  21. 2026-08-05 19:17 UTCEPSS rescore
  22. 2026-08-04 19:01 UTCEG score recompute
  23. 2026-08-04 19:01 UTCGHSA enrichment
  24. 2026-08-04 10:37 UTCEPSS rescore
  25. 2026-08-03 17:40 UTCEG score recompute
  26. 2026-08-03 17:40 UTCGHSA enrichment
  27. 2026-08-03 16:01 UTCEG score recompute
  28. 2026-08-03 16:01 UTCGHSA enrichment
  29. 2026-08-03 10:35 UTCEPSS rescore
  30. 2026-08-02 14:40 UTCGHSA enrichment
  31. 2026-08-01 13:19 UTCEG score recompute
  32. 2026-08-01 12:43 UTCEG score recompute
  33. 2026-08-01 12:42 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2025-71404?
CVE-2025-71404 is a medium vulnerability published on August 1, 2026. better-auth versions after v0.0.2 and before 1.1.16 contain a reflected cross-site scripting (XSS) vulnerability on the /api/auth/error page, where the value of the 'error' URL parameter is reflected as HTML without proper neutralization. An attacker who coerces a user into visiting a…
When was CVE-2025-71404 disclosed?
CVE-2025-71404 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-2025-71404 actively exploited?
CVE-2025-71404 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 66.7% of all scored CVEs.
What is the CVSS score of CVE-2025-71404?
CVE-2025-71404 has a CVSS v3 base score of 5.1 (NVD).
How do I remediate CVE-2025-71404?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-71404, 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-2025-71404

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