CVE-2026-58188

HIGHPre-NVD 8.28.2
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-07-29. A secondary CVSS source baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
8.2EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 8.2Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

Several Apache Traffic Server experimental plugins have memory-safety and limit-bypass errors.

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
8.2
EG Score
8.2HIGHmedium confidence
EG Risk
52
EG Risk 52/100

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 (value × EchelonGraph’s weight)
Severity82% × 45%
The EG Score, 8.2 of 10.
Exploitation0.8% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.8%
EPSS %ILE
54th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 29, 2026

Last Modified

October 1, 2026

Advisory Details (1)

Auto-updated Jul 29, 2026
Fix named in the CVE record.

Vendor Advisories for CVE-2026-58188(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 11× in last 7d / 70× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 247 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 147 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  3. 2026-10-12 15:53 UTCEG score recompute
  4. 2026-10-11 19:37 UTCEG score recompute
  5. 2026-10-11 16:52 UTCEG score recompute
  6. 2026-10-11 14:14 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  10. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  12. 2026-10-07 00:01 UTCEG score recompute
  13. 2026-10-07 00:01 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  15. 2026-10-05 20:54 UTCEG score recompute
  16. 2026-10-05 20:54 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  17. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  18. 2026-10-05 02:38 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  19. 2026-10-04 07:04 UTCEG score recompute
  20. 2026-10-04 07:04 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  21. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  22. 2026-10-02 17:58 UTCEG score recompute
  23. 2026-10-02 17:58 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  24. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  25. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.8% · 54th percentile
Show 75 more
  1. 2026-10-01 18:30 UTCEG score recompute
  2. 2026-10-01 18:30 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  3. 2026-10-01 17:21 UTCEG score recompute
  4. 2026-10-01 17:21 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  5. 2026-10-01 14:39 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  6. 2026-10-01 03:37 UTCEG score recompute
  7. 2026-10-01 03:37 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  8. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  9. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  10. 2026-09-29 07:37 UTCEG score recompute
  11. 2026-09-29 07:37 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  12. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  13. 2026-09-28 03:18 UTCEG score recompute
  14. 2026-09-28 03:18 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  15. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  16. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  17. 2026-09-25 05:44 UTCEG score recompute
  18. 2026-09-25 05:44 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  19. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  20. 2026-09-24 08:49 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  21. 2026-09-23 21:51 UTCEG score recompute
  22. 2026-09-23 21:51 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  23. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  24. 2026-09-23 02:48 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  25. 2026-09-22 15:50 UTCEG score recompute
  26. 2026-09-22 15:50 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  27. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  28. 2026-09-20 00:23 UTCEG score recompute
  29. 2026-09-20 00:23 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  30. 2026-09-19 04:58 UTCEG score recompute
  31. 2026-09-19 04:58 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  32. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  33. 2026-09-18 15:19 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  34. 2026-09-18 01:45 UTCEG score recompute
  35. 2026-09-18 01:45 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  36. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  37. 2026-09-17 01:37 UTCEG score recompute
  38. 2026-09-17 01:37 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  39. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  40. 2026-09-16 05:49 UTCEG score recompute
  41. 2026-09-16 05:49 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  42. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  43. 2026-09-15 08:11 UTCEG score recompute
  44. 2026-09-15 08:11 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  45. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  46. 2026-09-14 11:39 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  47. 2026-09-14 00:41 UTCEG score recompute
  48. 2026-09-14 00:41 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  49. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  50. 2026-09-13 13:43 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  51. 2026-09-13 02:45 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  52. 2026-09-12 15:47 UTCEG score recompute
  53. 2026-09-12 15:47 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  54. 2026-09-12 04:49 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  55. 2026-09-11 17:50 UTCEG score recompute
  56. 2026-09-11 17:50 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  57. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  58. 2026-09-11 06:52 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  59. 2026-09-10 19:53 UTCEG score recompute
  60. 2026-09-10 19:53 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  61. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  62. 2026-09-10 07:18 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  63. 2026-09-09 07:51 UTCEG score recompute
  64. 2026-09-09 07:50 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  65. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  66. 2026-09-07 20:52 UTCEG score recompute
  67. 2026-09-07 20:52 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  68. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  69. 2026-09-06 17:49 UTCEG score recompute
  70. 2026-09-06 17:49 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  71. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  72. 2026-09-06 06:50 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  73. 2026-09-05 19:07 UTCEG score recompute
  74. 2026-09-05 19:07 UTCGHSA enrichmentGHSA-g2hg-96vq-xgmg · GitHub severity HIGH · GitHub CVSS 8.2
  75. 2026-09-05 05:21 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-58188?
CVE-2026-58188 is a high-severity vulnerability; its CVE record was published on July 29, 2026. Several Apache Traffic Server experimental plugins have memory-safety and limit-bypass errors. 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…
When was the CVE record for CVE-2026-58188 published?
The CVE record for CVE-2026-58188 was published on July 29, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 1, 2026; the record at its source may have been updated since.
Is CVE-2026-58188 actively exploited?
CVE-2026-58188 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (54th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58188?
CVE-2026-58188 has a CVSS base score of 8.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-58188?
The CVE record for CVE-2026-58188 names the fix: "Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue." The vendor advisories EchelonGraph has for CVE-2026-58188 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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