CVE-2026-12606

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-07-14. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

Eclipse Grizzly in versions before 5.0.2, cannot properly parse the trailer section in malformed trailer header's line, which can be leveraged to perform HTTP request smuggling. Grizzly 5.0.1 supports system properties that enable the behavior that fixes the vulnerability - set org.glassfish.grizzly.http.STRICT_HEADER_NAME_VALIDATION_RFC_9110 and org.glassfish.grizzly.http.STRICT_HEADER_VALUE_VALIDATION_RFC_9110 system properties to "true".

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

July 14, 2026

Last Modified

July 27, 2026

Advisory Details (1)

Auto-updated Jul 14, 2026
No patch confirmed yet.
generic

CVE reservation request for GlassFish project, Grizzly component, report #293: HTTP Request Smuggling (#129) · Issues · Eclipse Projects Security / cve-assignment · GitLab

https://gitlab.eclipse.org/security/cve-assignment/-/work_items/129

Vendor Advisories for CVE-2026-12606(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 15× in last 7d / 78× 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 114 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-12606?
CVE-2026-12606 is a medium vulnerability published on July 14, 2026. Eclipse Grizzly in versions before 5.0.2, cannot properly parse the trailer section in malformed trailer header's line, which can be leveraged to perform HTTP request smuggling. Grizzly 5.0.1 supports system properties that enable the behavior that fixes the vulnerability - set…
When was CVE-2026-12606 disclosed?
CVE-2026-12606 was first published in the National Vulnerability Database on July 14, 2026, with the most recent update on July 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12606 actively exploited?
CVE-2026-12606 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 78.2% of all scored CVEs.
What is the CVSS score of CVE-2026-12606?
CVE-2026-12606 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-12606?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12606, 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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