CVE-2026-58150

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

Score 10.0 from GitHub Security Advisory (severity: HIGH) published 2026-07-29. A secondary CVSS source baseline 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
10.0EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 10.0Exploit: None knownExposed services: Not assessed

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

Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.

Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

CVSS v3
10.0
EG Score
10.0CRITICALmedium confidence
EG Risk
60
EG Risk 60/100CISA SSVC

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
Severity100% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.6%
EPSS %ILE
45th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 29, 2026

Last Modified

October 1, 2026

Advisory Details (1)

Auto-updated Oct 8, 2026
No fix on record yet.
generic

Pony Mail

https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d

Vendor Advisories for CVE-2026-58150(1)

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

Affected Packages

(2 across 2 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
trafficserver8.1.1+ds-1.1 ... 9.2.5+ds-1 (40 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
trafficserver9.2.0+ds-2 ... 9.2.5+ds-1 (14 versions)
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 110× 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 392 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-58150?
CVE-2026-58150 is a critical vulnerability published on July 29, 2026. Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4,…
When was CVE-2026-58150 disclosed?
CVE-2026-58150 was first published on July 29, 2026, with the most recent update on October 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58150 actively exploited?
CVE-2026-58150 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58150?
CVE-2026-58150 has a CVSS base score of 10.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-58150?
No fix for CVE-2026-58150 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-58150 are linked in the Vendor Advisories panel on this page.

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