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
23%
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 9× in last 7d / 51× 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 143 total refreshes for this CVE.

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

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 77.4% 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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