CVE-2026-67183

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-28. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

TinyWeb through 0.0.8 contains a memory leak vulnerability that allows unauthenticated attackers to exhaust available memory by sending ordinary well-formed HTTP requests. Each request causes HttpParser::execute() to allocate Url objects, HttpHeaders objects, and HttpHeader instances via raw new expressions that are never freed due to missing destructors and unreachable delete calls, causing worker resident memory to grow monotonically by approximately 20 to 28 kB per request until the worker process is killed.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
KEV
Not listed

Published

July 28, 2026

Last Modified

July 30, 2026

Advisory Details (2)

Auto-updated Jul 28, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

TinyWeb 0.0.8 Memory Leak DoS via HTTP Request Handling | Advisories | VulnCheck

https://www.vulncheck.com/advisories/tinyweb-memory-leak-dos-via-http-request-handling
generic🟡 PoC Available

GitHub - theopaid/Unauthenticated-Memory-Leak-Leads-To-Memory-Exhaustion-TinyWeb-: Security Advisory: Unauthenticated Memory Leak Leads To Memory Exhaustion (TinyWeb) · GitHub

https://github.com/theopaid/Unauthenticated-Memory-Leak-Leads-To-Memory-Exhaustion-TinyWeb-

Vendor Advisories for CVE-2026-67183(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 19× in last 7d / 90× 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 166 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-67183?
CVE-2026-67183 is a high vulnerability published on July 28, 2026. TinyWeb through 0.0.8 contains a memory leak vulnerability that allows unauthenticated attackers to exhaust available memory by sending ordinary well-formed HTTP requests. Each request causes HttpParser::execute() to allocate Url objects, HttpHeaders objects, and HttpHeader instances via raw new…
When was CVE-2026-67183 disclosed?
CVE-2026-67183 was first published in the National Vulnerability Database on July 28, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67183 actively exploited?
CVE-2026-67183 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 69.9% of all scored CVEs.
What is the CVSS score of CVE-2026-67183?
CVE-2026-67183 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-67183?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-67183, 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.

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