CVE-2026-56345

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM 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
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 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(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
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.

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
WWBN/AVideo———

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 103× 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 200 total refreshes for this CVE.

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

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 0% probability of exploitation in the next 30 days, which ranks it in the top 62.2% of all scored CVEs.
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

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