CVE-2026-41056

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-04-14. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
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.

WWBN AVideo is an open source video platform. In versions 29.0 and below, the allowOrigin($allowAll=true) function in objects/functions.php reflects any arbitrary Origin header back in Access-Control-Allow-Origin along with Access-Control-Allow-Credentials: true. This function is called by both plugin/API/get.json.php and plugin/API/set.json.php — the primary API endpoints that handle user data retrieval, authentication, livestream credentials, and state-changing operations. Combined with the application's SameSite=None session cookie policy, any website can make credentialed cross-origin requests and read authenticated API responses, enabling theft of user PII, livestream keys, and performing state changes on behalf of the victim. Commit caf705f38eae0ccfac4c3af1587781355d24495e contains a fix.

CVSS v3
8.1
EG Score
8.1(medium)
EPSS
25.6%
KEV
Not listed

Published

April 21, 2026

Last Modified

April 23, 2026

Advisory Details (2)

Auto-updated May 5, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

CORS Origin Reflection with Credentials on Sensitive API Endpoints Enables Cross-Origin Account Takeover · Advisory · WWBN/AVideo · GitHub

https://github.com/WWBN/AVideo/security/advisories/GHSA-ccq9-r5cw-5hwq
generic

fix: Enhance CORS security by validating origins for credentialed req… · WWBN/AVideo@caf705f · GitHub

https://github.com/WWBN/AVideo/commit/caf705f38eae0ccfac4c3af1587781355d24495e

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
composerwwbn/avideo—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
wwbn/avideo10.4 ... 29.0 (18 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 36× 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 123 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-41056?
CVE-2026-41056 is a high vulnerability published on April 21, 2026. WWBN AVideo is an open source video platform. In versions 29.0 and below, the allowOrigin($allowAll=true) function in objects/functions.php reflects any arbitrary Origin header back in Access-Control-Allow-Origin along with Access-Control-Allow-Credentials: true. This function is called by both…
When was CVE-2026-41056 disclosed?
CVE-2026-41056 was first published in the National Vulnerability Database on April 21, 2026, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41056 actively exploited?
CVE-2026-41056 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 25.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-41056?
CVE-2026-41056 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-41056?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41056, 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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