CVE-2026-39998

HIGHNVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory published 2026-06-19. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

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

Improper Input Validation vulnerability in Apache APISIX.

The attacker can take advantage of certain configuration in forward-auth plugin to spoof identity headers. This issue affects Apache APISIX: from 2.12.0 through 3.16.0.

Users are recommended to upgrade to version 3.17.0, which fixes the issue.

CVSS v3
8.8
EG Score
8.8(high)
EPSS
32.3%
KEV
Not listed

Published

June 19, 2026

Last Modified

June 23, 2026

Advisory Details (1)

Auto-updated Jun 19, 2026
No patch confirmed yet.
generic
https://lists.apache.org/thread/vgkvy396010d7g6m0jrn4d3hjf2svlvv

Vendor Advisories for CVE-2026-39998(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 36× 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. 2026-07-06 21:42 UTCEG score recompute
  2. 2026-07-06 21:41 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 10:19 UTCEG score recompute
  6. 2026-07-06 10:19 UTCGHSA enrichment
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 22:53 UTCEG score recompute
  10. 2026-07-05 22:53 UTCGHSA enrichment
  11. 2026-07-05 11:31 UTCEG score recompute
  12. 2026-07-05 11:31 UTCGHSA enrichment
  13. 2026-07-05 02:30 UTCEPSS rescore
  14. 2026-07-05 00:09 UTCEG score recompute
  15. 2026-07-05 00:08 UTCGHSA enrichment
  16. 2026-07-04 12:42 UTCEG score recompute
  17. 2026-07-04 12:42 UTCGHSA enrichment
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-04 01:18 UTCEG score recompute
  20. 2026-07-04 01:18 UTCGHSA enrichment
  21. 2026-07-03 13:56 UTCEG score recompute
  22. 2026-07-03 13:56 UTCGHSA enrichment
  23. 2026-07-03 02:34 UTCEG score recompute
  24. 2026-07-03 02:34 UTCGHSA enrichment
  25. 2026-07-02 15:12 UTCEG score recompute
Show 56 more
  1. 2026-07-02 15:12 UTCGHSA enrichment
  2. 2026-07-02 03:49 UTCEG score recompute
  3. 2026-07-02 03:49 UTCGHSA enrichment
  4. 2026-07-01 16:27 UTCEG score recompute
  5. 2026-07-01 16:26 UTCGHSA enrichment
  6. 2026-07-01 15:06 UTCEPSS rescore
  7. 2026-07-01 05:05 UTCEG score recompute
  8. 2026-07-01 05:05 UTCGHSA enrichment
  9. 2026-06-30 23:22 UTCEPSS rescore
  10. 2026-06-30 17:42 UTCEG score recompute
  11. 2026-06-30 17:42 UTCGHSA enrichment
  12. 2026-06-30 06:19 UTCEG score recompute
  13. 2026-06-30 06:19 UTCGHSA enrichment
  14. 2026-06-29 18:57 UTCEG score recompute
  15. 2026-06-29 18:57 UTCGHSA enrichment
  16. 2026-06-29 14:06 UTCEPSS rescore
  17. 2026-06-29 07:35 UTCEG score recompute
  18. 2026-06-29 07:35 UTCGHSA enrichment
  19. 2026-06-28 20:13 UTCEG score recompute
  20. 2026-06-28 20:13 UTCGHSA enrichment
  21. 2026-06-28 14:07 UTCEPSS rescore
  22. 2026-06-28 08:50 UTCEG score recompute
  23. 2026-06-28 08:50 UTCGHSA enrichment
  24. 2026-06-28 04:56 UTCEPSS rescore
  25. 2026-06-27 21:28 UTCEG score recompute
  26. 2026-06-27 21:28 UTCGHSA enrichment
  27. 2026-06-27 10:06 UTCEG score recompute
  28. 2026-06-27 10:06 UTCGHSA enrichment
  29. 2026-06-27 03:08 UTCEPSS rescore
  30. 2026-06-26 22:44 UTCEG score recompute
  31. 2026-06-26 22:44 UTCGHSA enrichment
  32. 2026-06-26 11:21 UTCEG score recompute
  33. 2026-06-26 11:21 UTCGHSA enrichment
  34. 2026-06-25 19:51 UTCEG score recompute
  35. 2026-06-25 19:51 UTCGHSA enrichment
  36. 2026-06-25 13:49 UTCEPSS rescore
  37. 2026-06-25 13:49 UTCEPSS rescore
  38. 2026-06-25 08:29 UTCEG score recompute
  39. 2026-06-25 08:29 UTCGHSA enrichment
  40. 2026-06-24 21:07 UTCEG score recompute
  41. 2026-06-24 21:07 UTCGHSA enrichment
  42. 2026-06-24 14:05 UTCEPSS rescore
  43. 2026-06-24 09:46 UTCEG score recompute
  44. 2026-06-24 09:45 UTCGHSA enrichment
  45. 2026-06-23 22:22 UTCEG score recompute▲ 3.00
  46. 2026-06-23 22:22 UTCGHSA enrichment
  47. 2026-06-23 21:33 UTCEPSS rescore
  48. 2026-06-23 15:31 UTCNVD updateCVSS v3 → 8.8 · severity → HIGH
  49. 2026-06-22 20:36 UTCEG score recompute
  50. 2026-06-22 20:36 UTCGHSA enrichment
  51. 2026-06-21 18:50 UTCEG score recompute
  52. 2026-06-21 18:50 UTCGHSA enrichment
  53. 2026-06-20 17:04 UTCEG score recompute
  54. 2026-06-20 17:04 UTCGHSA enrichment
  55. 2026-06-19 15:17 UTCEG score recompute
  56. 2026-06-19 15:14 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-39998?
CVE-2026-39998 is a high vulnerability published on June 19, 2026. Improper Input Validation vulnerability in Apache APISIX. The attacker can take advantage of certain configuration in forward-auth plugin to spoof identity headers. This issue affects Apache APISIX: from 2.12.0 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the…
When was CVE-2026-39998 disclosed?
CVE-2026-39998 was first published in the National Vulnerability Database on June 19, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-39998 actively exploited?
CVE-2026-39998 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 32.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-39998?
CVE-2026-39998 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-39998?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39998, 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

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