CVE-2026-58187

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 73% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 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: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

The Apache Traffic Server multiplexer plugin overruns its chunk-decode buffer on upstream input, enabling denial of service.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, 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
7.5
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

July 29, 2026

Last Modified

July 31, 2026

Advisory Details (1)

Auto-updated Jul 31, 2026
No patch confirmed yet.

Vendor Advisories for CVE-2026-58187(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 rangeFixed inDependents
trafficserver8.1.1+ds-1.1 ... 9.2.5+ds-1 (40 versions)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
trafficserver9.2.0+ds-2 ... 9.2.5+ds-1 (14 versions)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 113× 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 125 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-58187?
CVE-2026-58187 is a high vulnerability published on July 29, 2026. The Apache Traffic Server multiplexer plugin overruns its chunk-decode buffer on upstream input, enabling denial of service. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, 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…
When was CVE-2026-58187 disclosed?
CVE-2026-58187 was first published in the National Vulnerability Database on July 29, 2026, with the most recent update on July 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58187 actively exploited?
CVE-2026-58187 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 72.8% of all scored CVEs.
What is the CVSS score of CVE-2026-58187?
CVE-2026-58187 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-58187?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58187, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-58187

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