CVE-2026-82543

HIGHPre-NVD 7.37.3—
EchelonGraph scoreHIGH confidence

Score 7.3 from GitHub Security Advisory published 2026-08-30. 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: 0%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 vulnerability was detected in vastsa FileCodeBox up to 2.3. This vulnerability affects the function update_file_usage of the file apps/base/views.py of the component Pickup Limit Handler. Performing a manipulation results in race condition. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading to version 2.5.0 is able to resolve this issue. The patch is named 8d7d856c62d73badd0797eb4daec8d2ff10a403a. Upgrading the affected component is recommended.

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
0%
EPSS %ILE
23%
KEV
Not listed

Published

August 30, 2026

Last Modified

August 31, 2026

Advisory Details (5)

Auto-updated Aug 30, 2026
Patch available. Sources: github_pr, github_commit, github_release.
generic

GitHub - vastsa/FileCodeBox: 文件快递柜-匿名口令分享文本，文件，像拿快递一样取文件（FileCodeBox - File Express Cabinet - Anonymous Passcode Sharing Text, Files, Like Taking Express Delivery for Files） · GitHub

https://github.com/vastsa/FileCodeBox/
github_release Patch Available

v2.5.0

Patch available: vastsa/FileCodeBox v2.5.0

https://github.com/vastsa/FileCodeBox/releases/tag/v2.5.0
github_commit Patch Available

commit 8d7d856c62d7 (vastsa/FileCodeBox)

Patch available: vastsa/FileCodeBox v2.5.1 (contains commit 8d7d856c62d7)

https://github.com/vastsa/FileCodeBox/commit/8d7d856c62d73badd0797eb4daec8d2ff10a403a
github_pr Patch Available

chore(master): release 2.5.0

Patch available: vastsa/FileCodeBox v2.5.1 (PR #487 merged 2026-07-11)

https://github.com/vastsa/FileCodeBox/pull/487
generic

[安全] 取件次数限制多重绕过（CRITICAL 竞态 + 可复用 URL + 过期检查缺失 + 分享码枚举） · Issue #482 · vastsa/FileCodeBox · GitHub

https://github.com/vastsa/FileCodeBox/issues/482

Vendor Advisories for CVE-2026-82543(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 25× in last 7d / 85× 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. 2026-09-21 02:58 UTCEG score recompute
  2. 2026-09-21 02:58 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 13:56 UTCGHSA enrichment
  5. 2026-09-20 00:55 UTCEG score recompute
  6. 2026-09-20 00:55 UTCGHSA enrichment
  7. 2026-09-19 11:54 UTCGHSA enrichment
  8. 2026-09-18 22:50 UTCEG score recompute
  9. 2026-09-18 22:50 UTCGHSA enrichment
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-18 09:50 UTCGHSA enrichment
  12. 2026-09-17 20:49 UTCEG score recompute
  13. 2026-09-17 20:49 UTCGHSA enrichment
  14. 2026-09-17 04:07 UTCGHSA enrichment
  15. 2026-09-16 15:03 UTCEG score recompute
  16. 2026-09-16 15:03 UTCGHSA enrichment
  17. 2026-09-16 14:08 UTCEPSS rescore
  18. 2026-09-16 05:15 UTCEPSS rescore
  19. 2026-09-16 02:02 UTCGHSA enrichment
  20. 2026-09-15 13:01 UTCEG score recompute
  21. 2026-09-15 13:01 UTCGHSA enrichment
  22. 2026-09-15 03:12 UTCEPSS rescore
  23. 2026-09-15 03:12 UTCEPSS rescore
  24. 2026-09-15 00:00 UTCGHSA enrichment
  25. 2026-09-14 10:59 UTCGHSA enrichment
Show 60 more
  1. 2026-09-13 21:58 UTCEG score recompute
  2. 2026-09-13 21:58 UTCGHSA enrichment
  3. 2026-09-13 08:56 UTCGHSA enrichment
  4. 2026-09-12 19:55 UTCEG score recompute
  5. 2026-09-12 19:55 UTCGHSA enrichment
  6. 2026-09-12 06:54 UTCGHSA enrichment
  7. 2026-09-11 17:53 UTCEG score recompute
  8. 2026-09-11 17:53 UTCGHSA enrichment
  9. 2026-09-11 14:53 UTCEPSS rescore
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-11 04:52 UTCGHSA enrichment
  12. 2026-09-10 15:51 UTCEG score recompute
  13. 2026-09-10 15:51 UTCGHSA enrichment
  14. 2026-09-10 02:50 UTCGHSA enrichment
  15. 2026-09-09 13:49 UTCGHSA enrichment
  16. 2026-09-09 00:48 UTCEG score recompute
  17. 2026-09-09 00:47 UTCGHSA enrichment
  18. 2026-09-08 22:01 UTCEPSS rescore
  19. 2026-09-08 11:46 UTCGHSA enrichment
  20. 2026-09-07 22:45 UTCGHSA enrichment
  21. 2026-09-07 09:44 UTCGHSA enrichment
  22. 2026-09-06 20:38 UTCEG score recompute
  23. 2026-09-06 20:38 UTCGHSA enrichment
  24. 2026-09-06 13:48 UTCEPSS rescore
  25. 2026-09-06 07:37 UTCGHSA enrichment
  26. 2026-09-05 18:36 UTCEG score recompute
  27. 2026-09-05 18:36 UTCGHSA enrichment
  28. 2026-09-05 15:31 UTCEPSS rescore
  29. 2026-09-05 05:34 UTCGHSA enrichment
  30. 2026-09-04 16:33 UTCEG score recompute
  31. 2026-09-04 16:32 UTCGHSA enrichment
  32. 2026-09-04 05:07 UTCEPSS rescore
  33. 2026-09-04 03:24 UTCGHSA enrichment
  34. 2026-09-03 14:22 UTCGHSA enrichment
  35. 2026-09-03 01:18 UTCEG score recompute
  36. 2026-09-03 01:18 UTCGHSA enrichment
  37. 2026-09-02 14:12 UTCEPSS rescore
  38. 2026-09-02 12:16 UTCGHSA enrichment
  39. 2026-09-01 23:15 UTCEG score recompute
  40. 2026-09-01 23:15 UTCGHSA enrichment
  41. 2026-09-01 13:54 UTCEPSS rescore
  42. 2026-09-01 10:14 UTCEG score recompute
  43. 2026-09-01 10:14 UTCGHSA enrichment
  44. 2026-09-01 04:40 UTCEPSS rescore
  45. 2026-09-01 04:40 UTCEPSS rescore
  46. 2026-08-31 21:09 UTCEG score recompute
  47. 2026-08-31 21:08 UTCGHSA enrichment
  48. 2026-08-31 17:24 UTCEG score recompute
  49. 2026-08-31 17:24 UTCGHSA enrichment
  50. 2026-08-31 17:20 UTCNVD updateCVSS v4 → 5.5
  51. 2026-08-31 16:57 UTCEG score recompute
  52. 2026-08-31 16:57 UTCGHSA enrichment
  53. 2026-08-31 16:54 UTCMITRE cvelistV5CVSS v4 → 6.9
  54. 2026-08-31 16:43 UTCGHSA enrichment
  55. 2026-08-31 02:34 UTCEG score recompute
  56. 2026-08-31 02:34 UTCGHSA enrichment
  57. 2026-08-30 13:32 UTCEG score recompute
  58. 2026-08-30 13:31 UTCNVD updateCVSS v4 → 5.5
  59. 2026-08-30 12:52 UTCEG score recompute
  60. 2026-08-30 12:50 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-82543?
CVE-2026-82543 is a high vulnerability published on August 30, 2026. A vulnerability was detected in vastsa FileCodeBox up to 2.3. This vulnerability affects the function updatefileusage of the file apps/base/views.py of the component Pickup Limit Handler. Performing a manipulation results in race condition. It is possible to initiate the attack remotely. The…
When was CVE-2026-82543 disclosed?
CVE-2026-82543 was first published in the National Vulnerability Database on August 30, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82543 actively exploited?
CVE-2026-82543 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 77.1% of all scored CVEs.
What is the CVSS score of CVE-2026-82543?
CVE-2026-82543 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-82543?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82543, 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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