CVE-2026-51106

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreHIGH confidence

Score 9.3 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-26. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.3Exploit: Elevated riskExposed: 0

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

An issue in TokTok qTox v1.18.4 allows a local attacker to cause a denial of service via the src/persistence/serialize.cpp component

CVSS v3
9.3
EG Score
9.3(high)
EG Risk
58(Track*)
EG Risk 58/100SSVC: 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
Severity93% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

August 26, 2026

Last Modified

September 9, 2026

Advisory Details (1)

Auto-updated Sep 14, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

[Bug]: SettingsSerializer `readStream()` Unbounded Allocation and Integer Overflow · Issue #706 · TokTok/qTox · GitHub

https://github.com/TokTok/qTox/issues/706

Vendor Advisories for CVE-2026-51106(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 53× in last 7d / 194× 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 194 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-51106?
CVE-2026-51106 is a critical vulnerability published on August 26, 2026. An issue in TokTok qTox v1.18.4 allows a local attacker to cause a denial of service via the src/persistence/serialize.cpp component
When was CVE-2026-51106 disclosed?
CVE-2026-51106 was first published in the National Vulnerability Database on August 26, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-51106 actively exploited?
CVE-2026-51106 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 86.3% of all scored CVEs.
What is the CVSS score of CVE-2026-51106?
CVE-2026-51106 has a CVSS v3.1 base score of 9.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-51106?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-51106, 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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