CVE-2026-13763

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-29. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

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

Inconsistent interpretation of HTTP/2 requests in AWS Application Load Balancer with AWS WAF enabled might allow remote actors to bypass AWS WAF managed rule body inspection via crafted HTTP/2 requests that fragment the request body across frames so that only a partial body is inspected. This issue only impacts HTTP/2 ALB target groups.

To remediate this issue, customers should enable the "Inspect after sufficient data" target group configuration associated to an ALB load balancer. Refer to: ( https://docs.aws.amazon.com/elasticloadbalancing/latest/application/edit-target-group-attributes.html#waf-http2-inspection )

CVSS v3
9.8
EG Score
9.8(high)
EPSS
38.2%
KEV
Not listed

Published

June 29, 2026

Last Modified

July 1, 2026

Advisory Details (2)

Auto-updated Jul 11, 2026
No patch confirmed yet.
generic

Edit target group attributes for your Application Load Balancer - Elastic Load Balancing

https://docs.aws.amazon.com/elasticloadbalancing/latest/application/edit-target-group-attributes.html#waf-http2-inspection
generic

CVE-2026-13762 and CVE-2026-13763 - Issue with HTTP/2 multi-frame request body inspection in AWS WAF

https://aws.amazon.com/security/security-bulletins/2026-048-aws/

Vendor Advisories for CVE-2026-13763(2)

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 17× in last 7d / 140× 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 140 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-13763?
CVE-2026-13763 is a critical vulnerability published on June 29, 2026. Inconsistent interpretation of HTTP/2 requests in AWS Application Load Balancer with AWS WAF enabled might allow remote actors to bypass AWS WAF managed rule body inspection via crafted HTTP/2 requests that fragment the request body across frames so that only a partial body is inspected. This issue…
When was CVE-2026-13763 disclosed?
CVE-2026-13763 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13763 actively exploited?
CVE-2026-13763 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 38.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-13763?
CVE-2026-13763 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-13763?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13763, 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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