CVE-2026-9494

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-16. a secondary CVSS source baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

An information disclosure vulnerability exists in Canonical ubuntu-pro-client (formerly ubuntu-advantage-tools). The client validates Ubuntu Pro APT credentials by executing /usr/lib/apt/apt-helper using the download-file command. During this process, the secret bearer token is embedded directly in the cleartext URL component passed via the command-line arguments (argv), resulting in a URL format such as https://bearer:@esm.ubuntu.com/.../. On systems utilizing a default-mounted /proc file system where process-hiding mitigations (such as hidepid) are disabled, an unprivileged local attacker can monitor system processes and read the sensitive bearer token directly from /proc/cmdline while the helper process is actively running. This leaked token can subsequently be used to gain unauthorized access to the victim's Ubuntu Pro or Expanded Security Maintenance (ESM) repositories.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

July 16, 2026

Last Modified

July 16, 2026

References (1)

Vendor Advisories for CVE-2026-9494(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuubuntu-advantage-tools (19.7ubuntu0.1) @ trusty2026-09-08ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 12× in last 7d / 76× 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 150 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-9494?
CVE-2026-9494 is a medium vulnerability published on July 16, 2026. An information disclosure vulnerability exists in Canonical ubuntu-pro-client (formerly ubuntu-advantage-tools). The client validates Ubuntu Pro APT credentials by executing /usr/lib/apt/apt-helper using the download-file command. During this process, the secret bearer token is embedded directly in…
When was CVE-2026-9494 disclosed?
CVE-2026-9494 was first published in the National Vulnerability Database on July 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9494 actively exploited?
CVE-2026-9494 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 95.8% of all scored CVEs.
What is the CVSS score of CVE-2026-9494?
CVE-2026-9494 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-9494?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9494, 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

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