CVE-2026-86306

HIGHPre-NVD 7.37.3—
EchelonGraph scoreHIGH confidence

Score 7.3 from GitHub Security Advisory published 2026-09-07. a secondary CVSS source baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.3Exploit: Elevated riskExposed: 0

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

A weakness has been identified in light0011 cms c774dce31c6df0055568a8d5c53d964d99be199d/f72cf46f601efb2a0618c3814cc2f61380b38930. This affects an unknown part of the file App/Home/Model/UserModel.class.php of the component Cookie Helper. Executing a manipulation of the argument Username can lead to improper authentication. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. This product utilizes a rolling release system for continuous delivery, and as such, version information for affected or updated releases is not disclosed. The project was informed of the problem early through an issue report but has not responded yet.

CVSS v3
7.3
EG Score
7.3(high)
EG Risk
64(Attend)
EG Risk 64/100SSVC: 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
Severity73% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
51%
KEV
Not listed

Published

September 7, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Sep 7, 2026
No patch confirmed yet.
generic

GitHub - light0011/cms: 基于bootstrap与thinkphp做的新闻内容管理系统，有登陆注册、发表文章、评论、投票等常用功能 · GitHub

https://github.com/light0011/cms/
generic

A forged username cookie can impersonate comment authors · Issue #11 · light0011/cms · GitHub

https://github.com/light0011/cms/issues/11

Vendor Advisories for CVE-2026-86306(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 26× in last 7d / 74× 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.

  1. 2026-09-25 01:26 UTCEG score recompute
  2. 2026-09-25 01:26 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-24 12:25 UTCGHSA enrichment
  5. 2026-09-23 23:24 UTCEG score recompute
  6. 2026-09-23 23:24 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 10:04 UTCGHSA enrichment
  9. 2026-09-22 21:03 UTCEG score recompute
  10. 2026-09-22 21:03 UTCGHSA enrichment
  11. 2026-09-22 16:01 UTCEPSS rescore
  12. 2026-09-22 08:03 UTCEG score recompute
  13. 2026-09-22 08:03 UTCGHSA enrichment
  14. 2026-09-21 21:09 UTCEPSS rescore
  15. 2026-09-21 19:02 UTCGHSA enrichment
  16. 2026-09-21 06:01 UTCEG score recompute
  17. 2026-09-21 06:01 UTCGHSA enrichment
  18. 2026-09-20 20:16 UTCEPSS rescore
  19. 2026-09-20 17:01 UTCGHSA enrichment
  20. 2026-09-20 03:59 UTCEG score recompute
  21. 2026-09-20 03:59 UTCGHSA enrichment
  22. 2026-09-19 14:58 UTCGHSA enrichment
  23. 2026-09-19 01:57 UTCEG score recompute
  24. 2026-09-19 01:57 UTCGHSA enrichment
  25. 2026-09-18 19:28 UTCEPSS rescore
Show 49 more
  1. 2026-09-18 12:57 UTCGHSA enrichment
  2. 2026-09-17 23:56 UTCEG score recompute
  3. 2026-09-17 23:56 UTCGHSA enrichment
  4. 2026-09-17 19:32 UTCEPSS rescore
  5. 2026-09-17 10:19 UTCGHSA enrichment
  6. 2026-09-16 21:18 UTCEG score recompute
  7. 2026-09-16 21:18 UTCGHSA enrichment
  8. 2026-09-16 14:09 UTCEPSS rescore
  9. 2026-09-16 07:27 UTCEG score recompute
  10. 2026-09-16 07:27 UTCGHSA enrichment
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-15 18:26 UTCGHSA enrichment
  13. 2026-09-15 05:23 UTCEG score recompute
  14. 2026-09-15 05:22 UTCGHSA enrichment
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-14 16:18 UTCGHSA enrichment
  18. 2026-09-14 03:17 UTCEG score recompute
  19. 2026-09-14 03:17 UTCGHSA enrichment
  20. 2026-09-13 14:17 UTCGHSA enrichment
  21. 2026-09-13 01:16 UTCEG score recompute
  22. 2026-09-13 01:16 UTCGHSA enrichment
  23. 2026-09-12 12:15 UTCGHSA enrichment
  24. 2026-09-11 23:14 UTCEG score recompute
  25. 2026-09-11 23:14 UTCGHSA enrichment
  26. 2026-09-11 14:53 UTCEPSS rescore
  27. 2026-09-11 14:53 UTCEPSS rescore
  28. 2026-09-11 09:50 UTCEG score recompute
  29. 2026-09-11 09:49 UTCGHSA enrichment
  30. 2026-09-10 20:48 UTCEG score recompute
  31. 2026-09-10 20:48 UTCGHSA enrichment
  32. 2026-09-10 07:48 UTCGHSA enrichment
  33. 2026-09-09 18:47 UTCGHSA enrichment
  34. 2026-09-09 05:47 UTCEG score recompute
  35. 2026-09-09 05:47 UTCGHSA enrichment
  36. 2026-09-08 22:01 UTCEPSS rescore
  37. 2026-09-08 16:46 UTCEG score recompute
  38. 2026-09-08 16:46 UTCGHSA enrichment
  39. 2026-09-08 16:28 UTCNVD updateCVSS v4 → 5.5
  40. 2026-09-08 15:44 UTCEG score recompute
  41. 2026-09-08 15:43 UTCGHSA enrichment
  42. 2026-09-08 15:24 UTCMITRE cvelistV5CVSS v4 → 6.9
  43. 2026-09-08 13:47 UTCGHSA enrichment
  44. 2026-09-08 02:29 UTCEG score recompute
  45. 2026-09-08 02:29 UTCGHSA enrichment
  46. 2026-09-07 13:27 UTCEG score recompute
  47. 2026-09-07 13:21 UTCNVD updateCVSS v4 → 5.5
  48. 2026-09-07 13:04 UTCEG score recompute
  49. 2026-09-07 13:01 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-86306?
CVE-2026-86306 is a high vulnerability published on September 7, 2026. A weakness has been identified in light0011 cms c774dce31c6df0055568a8d5c53d964d99be199d/f72cf46f601efb2a0618c3814cc2f61380b38930. This affects an unknown part of the file App/Home/Model/UserModel.class.php of the component Cookie Helper. Executing a manipulation of the argument Username can lead…
When was CVE-2026-86306 disclosed?
CVE-2026-86306 was first published in the National Vulnerability Database on September 7, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86306 actively exploited?
CVE-2026-86306 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 49.5% of all scored CVEs.
What is the CVSS score of CVE-2026-86306?
CVE-2026-86306 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-86306?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86306, 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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