CVE-2026-19745

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory (severity: LOW) published 2026-08-13. A secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 4.3Exploit: Elevated riskExposed services: Not assessed

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

A flaw has been found in Calix GigaSpire 26.1.0. Impacted is an unknown function of the file utilities_configurationsave.cgi of the component Web Management Interface. Executing a manipulation of the argument sessionKey can lead to denial of service. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
35
EG Risk 35/100CISA 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
Severity43% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
38th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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

August 13, 2026

Last Modified

August 14, 2026

References (4)

Vendor Advisories for CVE-2026-19745(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 11× in last 7d / 67× 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 133 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCdrbloop2000/CVE-2026-19745
    First seen Aug 29, 2026

    Learn how I found my first two CVEs by pure accident.

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19745?
CVE-2026-19745 is a medium vulnerability published on August 13, 2026. A flaw has been found in Calix GigaSpire 26.1.0. Impacted is an unknown function of the file utilities_configurationsave.cgi of the component Web Management Interface. Executing a manipulation of the argument sessionKey can lead to denial of service. The attack can be launched remotely. The exploit…
When was CVE-2026-19745 disclosed?
CVE-2026-19745 was first published on August 13, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19745 actively exploited?
CVE-2026-19745 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (38th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19745?
CVE-2026-19745 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-19745?
No fix for CVE-2026-19745 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-2026-19745 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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