CVE-2026-56345

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-20. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0

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

AVideo through 29.0 contains an authorization bypass vulnerability in the Meet plugin's uploadRecordedVideo.json.php endpoint that derives the target users_id from the uploaded filename without verification. An attacker with knowledge of the Meet shared secret can craft a malicious file upload with a filename containing an arbitrary users_id to invoke passwordless User->login() and establish an authenticated session as any user including admin. Attackers can obtain the Meet shared secret through path-traversal vulnerabilities or timing attacks against checkToken.json.php, then POST a crafted file to uploadRecordedVideo.json.php with a filename like '1-anything.mp4' to hijack admin sessions and gain full account takeover.

CVSS v3
8.1
EG Score
8.1(high)
EPSS
21.3%
KEV
Not listed

Published

June 20, 2026

Last Modified

June 23, 2026

Advisory Details (2)

Auto-updated Jun 20, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

AVideo - Arbitrary User Session Hijacking via Meet Plugin uploadRecordedVideo Endpoint | Advisories | VulnCheck

https://www.vulncheck.com/advisories/avideo-arbitrary-user-session-hijacking-via-meet-plugin-uploadrecordedvideo-endpoint
github Patch Available🟡 PoC Available

Meet plugin: `uploadRecordedVideo.json.php` derives `users_id` from the uploaded filename and calls passwordless `User->login()`, allowing any caller with the Meet shared secret to obtain a session as arbitrary users including admin · Advisory · WWBN/AVideo · GitHub

https://github.com/WWBN/AVideo/security/advisories/GHSA-qxvm-r42f-5p8j

Vendor Advisories for CVE-2026-56345(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 36× in last 7d / 82× 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. 2026-07-06 18:57 UTCEG score recompute
  2. 2026-07-06 18:57 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 05:38 UTCEG score recompute
  6. 2026-07-06 05:38 UTCGHSA enrichment
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 16:53 UTCEG score recompute
  10. 2026-07-05 16:53 UTCGHSA enrichment
  11. 2026-07-05 04:07 UTCEG score recompute
  12. 2026-07-05 04:07 UTCGHSA enrichment
  13. 2026-07-05 02:31 UTCEPSS rescore
  14. 2026-07-05 02:30 UTCEPSS rescore
  15. 2026-07-04 15:22 UTCEG score recompute
  16. 2026-07-04 15:22 UTCGHSA enrichment
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-04 02:32 UTCEG score recompute
  20. 2026-07-04 02:31 UTCGHSA enrichment
  21. 2026-07-03 13:46 UTCEG score recompute
  22. 2026-07-03 13:46 UTCGHSA enrichment
  23. 2026-07-03 01:04 UTCEG score recompute
  24. 2026-07-03 01:04 UTCGHSA enrichment
  25. 2026-07-02 12:20 UTCEG score recompute
Show 57 more
  1. 2026-07-02 12:20 UTCGHSA enrichment
  2. 2026-07-01 23:37 UTCEG score recompute
  3. 2026-07-01 23:37 UTCGHSA enrichment
  4. 2026-07-01 15:07 UTCEPSS rescore
  5. 2026-07-01 10:53 UTCEG score recompute
  6. 2026-07-01 10:53 UTCGHSA enrichment
  7. 2026-06-30 23:22 UTCEPSS rescore
  8. 2026-06-30 22:06 UTCEG score recompute
  9. 2026-06-30 22:06 UTCGHSA enrichment
  10. 2026-06-30 09:23 UTCEG score recompute
  11. 2026-06-30 09:23 UTCGHSA enrichment
  12. 2026-06-29 20:40 UTCEG score recompute
  13. 2026-06-29 20:40 UTCGHSA enrichment
  14. 2026-06-29 14:06 UTCEPSS rescore
  15. 2026-06-29 14:06 UTCEPSS rescore
  16. 2026-06-29 07:57 UTCEG score recompute
  17. 2026-06-29 07:56 UTCGHSA enrichment
  18. 2026-06-28 19:11 UTCEG score recompute
  19. 2026-06-28 19:11 UTCGHSA enrichment
  20. 2026-06-28 14:07 UTCEPSS rescore
  21. 2026-06-28 06:28 UTCEG score recompute
  22. 2026-06-28 06:28 UTCGHSA enrichment
  23. 2026-06-28 04:56 UTCEPSS rescore
  24. 2026-06-28 04:56 UTCEPSS rescore
  25. 2026-06-27 17:46 UTCEG score recompute
  26. 2026-06-27 17:46 UTCGHSA enrichment
  27. 2026-06-27 05:02 UTCEG score recompute
  28. 2026-06-27 05:02 UTCGHSA enrichment
  29. 2026-06-27 03:08 UTCEPSS rescore
  30. 2026-06-26 16:18 UTCEG score recompute
  31. 2026-06-26 16:18 UTCGHSA enrichment
  32. 2026-06-26 03:36 UTCEG score recompute
  33. 2026-06-26 03:36 UTCGHSA enrichment
  34. 2026-06-25 14:53 UTCEG score recompute
  35. 2026-06-25 14:53 UTCGHSA enrichment
  36. 2026-06-25 13:49 UTCEPSS rescore
  37. 2026-06-25 02:08 UTCEG score recompute
  38. 2026-06-25 02:08 UTCGHSA enrichment
  39. 2026-06-24 14:05 UTCEPSS rescore
  40. 2026-06-24 13:24 UTCEG score recompute
  41. 2026-06-24 13:24 UTCGHSA enrichment
  42. 2026-06-24 00:41 UTCEG score recompute
  43. 2026-06-24 00:41 UTCGHSA enrichment
  44. 2026-06-23 21:33 UTCEPSS rescore
  45. 2026-06-23 21:33 UTCEPSS rescore
  46. 2026-06-23 11:56 UTCEG score recompute
  47. 2026-06-23 11:56 UTCGHSA enrichment
  48. 2026-06-22 23:13 UTCEG score recompute
  49. 2026-06-22 23:13 UTCGHSA enrichment
  50. 2026-06-22 10:28 UTCEG score recompute
  51. 2026-06-22 10:28 UTCGHSA enrichment
  52. 2026-06-21 21:45 UTCEG score recompute
  53. 2026-06-21 21:44 UTCGHSA enrichment
  54. 2026-06-21 09:01 UTCEG score recompute
  55. 2026-06-21 09:01 UTCGHSA enrichment
  56. 2026-06-20 20:15 UTCEG score recompute
  57. 2026-06-20 20:15 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56345?
CVE-2026-56345 is a high vulnerability published on June 20, 2026. AVideo through 29.0 contains an authorization bypass vulnerability in the Meet plugin's uploadRecordedVideo.json.php endpoint that derives the target usersid from the uploaded filename without verification. An attacker with knowledge of the Meet shared secret can craft a malicious file upload with…
When was CVE-2026-56345 disclosed?
CVE-2026-56345 was first published in the National Vulnerability Database on June 20, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56345 actively exploited?
CVE-2026-56345 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-56345?
CVE-2026-56345 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-56345?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56345, 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

Explore the affected products and dependency analysis for CVE-2026-56345

Explore →

Is Your Infrastructure Affected by CVE-2026-56345?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs