CVE-2026-9588

HIGHPre-NVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 66% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: None knownExposed: 0

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

A stored cross-site scripting (XSS) vulnerability exists in Sangoma Switchvox SMB Edition 8.3 (104997) within the voicemail notification template functionality. The submit_modify_voicemail_template endpoint fails to properly sanitize HTML content supplied by authenticated users, allowing malicious JavaScript supplied through the template_text parameter to be stored server-side and subsequently rendered to other users.

CVSS v3
7.0
EG Score
7.0(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity70% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
34%
KEV
Not listed

Published

July 17, 2026

Last Modified

July 17, 2026

Advisory Details (2)

Auto-updated Jul 17, 2026
No patch confirmed yet.
generic
https://sangomakb.atlassian.net/wiki/spaces/Switchvox/pages/1802371073/Switchvox+-+Release+Notes+Version+8.4.0.2+July+14+2026
generic

Advisory: Sangoma Switchvox SMB :: SRA Labs | Cybersecurity Research & Innovation by Security Risk Advisors

https://labs.sra.io/posts/switchvox/

Vendor Advisories for CVE-2026-9588(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 21× 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 1,894 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-9588?
CVE-2026-9588 is a high vulnerability published on July 17, 2026. A stored cross-site scripting (XSS) vulnerability exists in Sangoma Switchvox SMB Edition 8.3 (104997) within the voicemail notification template functionality. The submitmodifyvoicemailtemplate endpoint fails to properly sanitize HTML content supplied by authenticated users, allowing malicious…
When was CVE-2026-9588 disclosed?
CVE-2026-9588 was first published in the National Vulnerability Database on July 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9588 actively exploited?
CVE-2026-9588 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 66.5% of all scored CVEs.
What is the CVSS score of CVE-2026-9588?
CVE-2026-9588 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2026-9588?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9588, 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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