CVE-2026-16083

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-07-18. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 5.3Exploit: Elevated riskExposed: 0

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

A security flaw has been discovered in Sipeed PicoClaw up to 0.2.9. This affects the function webhook.ParseRequest of the file pkg/channels/line/line.go of the component LINE Webhook. The manipulation results in authentication bypass by capture-replay. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. The reported GitHub issue was closed automatically with the label "not planned" by a bot.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
55(Attend)
EG Risk 55/100SSVC: Attend

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
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
52%
KEV
Not listed

Published

July 18, 2026

Last Modified

July 20, 2026

Advisory Details (2)

Auto-updated Jul 19, 2026
No patch confirmed yet.
generic

[Security] Signed LINE webhook replay allows duplicate inbound event execution in PicoClaw · Issue #3073 · sipeed/picoclaw · GitHub

https://github.com/sipeed/picoclaw/issues/3073
generic

GitHub - sipeed/picoclaw: Tiny, Fast, and Deployable anywhere — automate the mundane, unleash your creativity · GitHub

https://github.com/sipeed/picoclaw/

Vendor Advisories for CVE-2026-16083(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 13× in last 7d / 58× 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. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-18 09:50 UTCEG score recompute
  3. 2026-09-18 09:50 UTCGHSA enrichment
  4. 2026-09-17 10:14 UTCEG score recompute
  5. 2026-09-17 10:14 UTCGHSA enrichment
  6. 2026-09-16 14:07 UTCEPSS rescore
  7. 2026-09-16 05:14 UTCEPSS rescore
  8. 2026-09-14 03:20 UTCEG score recompute
  9. 2026-09-14 03:20 UTCGHSA enrichment
  10. 2026-09-13 16:46 UTCEPSS rescore
  11. 2026-09-13 04:51 UTCEG score recompute
  12. 2026-09-13 04:51 UTCGHSA enrichment
  13. 2026-09-12 15:00 UTCEPSS rescore
  14. 2026-09-11 21:04 UTCEG score recompute
  15. 2026-09-11 21:04 UTCGHSA enrichment
  16. 2026-09-11 14:52 UTCEPSS rescore
  17. 2026-09-11 09:36 UTCEPSS rescore
  18. 2026-09-10 09:34 UTCEPSS rescore
  19. 2026-09-08 22:00 UTCEPSS rescore
  20. 2026-09-07 23:59 UTCEG score recompute
  21. 2026-09-07 23:59 UTCGHSA enrichment
  22. 2026-09-07 16:01 UTCEPSS rescore
  23. 2026-09-06 18:55 UTCEG score recompute
  24. 2026-09-06 18:55 UTCGHSA enrichment
  25. 2026-09-06 13:47 UTCEPSS rescore
Show 75 more
  1. 2026-09-05 20:25 UTCEG score recompute
  2. 2026-09-05 20:25 UTCGHSA enrichment
  3. 2026-09-04 05:06 UTCEPSS rescore
  4. 2026-09-02 14:11 UTCEPSS rescore
  5. 2026-09-01 13:53 UTCEPSS rescore
  6. 2026-09-01 04:39 UTCEPSS rescore
  7. 2026-08-31 01:42 UTCEG score recompute
  8. 2026-08-31 01:42 UTCGHSA enrichment
  9. 2026-08-30 19:17 UTCEPSS rescore
  10. 2026-08-30 03:13 UTCEG score recompute
  11. 2026-08-30 03:13 UTCGHSA enrichment
  12. 2026-08-30 01:22 UTCEPSS rescore
  13. 2026-08-28 21:41 UTCEPSS rescore
  14. 2026-08-27 14:25 UTCEPSS rescore
  15. 2026-08-27 12:12 UTCEG score recompute
  16. 2026-08-27 12:12 UTCGHSA enrichment
  17. 2026-08-26 14:46 UTCEPSS rescore
  18. 2026-08-26 13:42 UTCGHSA enrichment
  19. 2026-08-25 14:32 UTCEG score recompute
  20. 2026-08-25 14:32 UTCGHSA enrichment
  21. 2026-08-25 13:48 UTCEPSS rescore
  22. 2026-08-24 15:53 UTCEG score recompute
  23. 2026-08-24 15:53 UTCGHSA enrichment
  24. 2026-08-23 17:24 UTCEG score recompute
  25. 2026-08-23 17:24 UTCGHSA enrichment
  26. 2026-08-23 00:19 UTCEPSS rescore
  27. 2026-08-22 18:55 UTCEG score recompute
  28. 2026-08-22 18:55 UTCGHSA enrichment
  29. 2026-08-21 23:49 UTCEPSS rescore
  30. 2026-08-21 20:24 UTCEG score recompute
  31. 2026-08-21 20:24 UTCGHSA enrichment
  32. 2026-08-20 22:55 UTCEPSS rescore
  33. 2026-08-20 21:54 UTCGHSA enrichment
  34. 2026-08-19 23:25 UTCEG score recompute
  35. 2026-08-19 23:25 UTCGHSA enrichment
  36. 2026-08-19 17:03 UTCEPSS rescore
  37. 2026-08-18 21:51 UTCEG score recompute
  38. 2026-08-18 21:50 UTCGHSA enrichment
  39. 2026-08-18 13:48 UTCEPSS rescore
  40. 2026-08-17 23:02 UTCEG score recompute
  41. 2026-08-17 23:02 UTCGHSA enrichment
  42. 2026-08-17 13:47 UTCEPSS rescore
  43. 2026-08-17 00:32 UTCEG score recompute
  44. 2026-08-17 00:32 UTCGHSA enrichment
  45. 2026-08-16 14:56 UTCEPSS rescore
  46. 2026-08-16 02:14 UTCEPSS rescore
  47. 2026-08-16 02:03 UTCGHSA enrichment
  48. 2026-08-15 03:34 UTCEG score recompute
  49. 2026-08-15 03:34 UTCGHSA enrichment
  50. 2026-08-15 01:30 UTCEPSS rescore
  51. 2026-08-14 05:04 UTCEG score recompute
  52. 2026-08-14 05:04 UTCGHSA enrichment
  53. 2026-08-13 22:00 UTCEPSS rescore
  54. 2026-08-13 06:35 UTCEG score recompute
  55. 2026-08-13 06:35 UTCGHSA enrichment
  56. 2026-08-12 13:50 UTCEPSS rescore
  57. 2026-08-12 08:06 UTCEG score recompute
  58. 2026-08-12 08:06 UTCGHSA enrichment
  59. 2026-08-11 13:42 UTCEPSS rescore
  60. 2026-08-11 09:37 UTCEG score recompute
  61. 2026-08-11 09:37 UTCGHSA enrichment
  62. 2026-08-11 00:00 UTCEPSS rescore
  63. 2026-08-10 11:08 UTCEG score recompute
  64. 2026-08-10 11:07 UTCGHSA enrichment
  65. 2026-08-09 13:46 UTCEPSS rescore
  66. 2026-08-09 12:39 UTCEG score recompute
  67. 2026-08-09 12:39 UTCGHSA enrichment
  68. 2026-08-08 16:37 UTCEPSS rescore
  69. 2026-08-08 14:10 UTCEG score recompute
  70. 2026-08-08 14:10 UTCGHSA enrichment
  71. 2026-08-07 15:40 UTCGHSA enrichment
  72. 2026-08-06 17:11 UTCEG score recompute
  73. 2026-08-06 17:11 UTCGHSA enrichment
  74. 2026-08-06 13:46 UTCEPSS rescore
  75. 2026-08-05 19:17 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-16083?
CVE-2026-16083 is a medium vulnerability published on July 18, 2026. A security flaw has been discovered in Sipeed PicoClaw up to 0.2.9. This affects the function webhook.ParseRequest of the file pkg/channels/line/line.go of the component LINE Webhook. The manipulation results in authentication bypass by capture-replay. The attack may be launched remotely. The…
When was CVE-2026-16083 disclosed?
CVE-2026-16083 was first published in the National Vulnerability Database on July 18, 2026, with the most recent update on July 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16083 actively exploited?
CVE-2026-16083 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 47.6% of all scored CVEs.
What is the CVSS score of CVE-2026-16083?
CVE-2026-16083 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-16083?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16083, 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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