CVE-2026-68763

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-26. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120.

The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected.

Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
56%
KEV
Not listed

Published

August 25, 2026

Last Modified

August 27, 2026

Advisory Details (1)

Auto-updated Aug 26, 2026
No patch confirmed yet.
generic
https://lists.apache.org/thread/tv51ty39ppv41v04hdtkp9dp7tg02nzl

Vendor Advisories for CVE-2026-68763(3)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhattomcat10-main-10.1.59-0.1.hum12026-09-03redhat
redhattomcat11-main-11.0.25-0.1.hum12026-08-18redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(8 across 3 ecosystems)
Debian:13(3)
PackageVulnerable rangeFixed inDependents
tomcat1010.1.40-1 ... 10.1.55-1~deb13u1 (10 versions)——
tomcat1111.0.11-1 ... 11.0.6-1 (10 versions)——
tomcat9—9.0.70-2—
Debian:14(3)
PackageVulnerable rangeFixed inDependents
tomcat1010.1.40-1 ... 10.1.55-1~deb13u1 (10 versions)——
tomcat1111.0.11-1 ... 11.0.6-1 (10 versions)——
tomcat9—9.0.70-2—
Debian:12(2)
PackageVulnerable rangeFixed inDependents
tomcat1010.1.10-1 ... 10.1.9-1 (36 versions)——
tomcat9—9.0.70-2—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 38× in last 7d / 135× 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 135 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-68763?
CVE-2026-68763 is a high vulnerability published on August 25, 2026. Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120. The following versions were…
When was CVE-2026-68763 disclosed?
CVE-2026-68763 was first published in the National Vulnerability Database on August 25, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-68763 actively exploited?
CVE-2026-68763 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 44.0% of all scored CVEs.
What is the CVSS score of CVE-2026-68763?
CVE-2026-68763 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-68763?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68763, 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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