CVE-2026-33766

MEDIUMNVD 6.56.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.2% (15th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-16652 (ENISA EUVD) · GHSA-f359-r3pv-2phf (GitHub Security Advisories)Source: ENISA EUVD

6.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.5Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

WWBN AVideo is an open source video platform. In versions up to and including 26.0, isSSRFSafeURL() validates URLs against private/reserved IP ranges before fetching, but url_get_contents() follows HTTP redirects without re-validating the redirect target. An attacker can bypass SSRF protection by redirecting from a public URL to an internal target. Commit 8b7e9dad359d5fac69e0cbbb370250e0b284bc12 contains a patch.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
45
EG Risk 45/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
15th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-28). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

March 27, 2026

Last Modified

October 26, 2026

Advisory Details (2)

Auto-updated Aug 3, 2026
Patch available. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

SSRF Protection Bypass via HTTP Redirect in Image Download Endpoints · Advisory · WWBN/AVideo · GitHub

https://github.com/WWBN/AVideo/security/advisories/GHSA-f359-r3pv-2phf
GitHub commit Patch Available

commit 8b7e9dad359d (WWBN/AVideo)

Patch available: WWBN/AVideo 29.0 (contains commit 8b7e9dad359d)

https://github.com/WWBN/AVideo/commit/8b7e9dad359d5fac69e0cbbb370250e0b284bc12

Patch Availability(1)

Vendor / EcosystemFix (by version range) / 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 rangeFix by version rangeDependents
wwbn/avideo10.4 ... 26.0 (17 versions)
  • every version through 26.0: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 42× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 97 of 119 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 3 repeat rows among the latest 100 are merged into the row they repeat. The 22 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  2. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  3. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  4. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  5. 2026-10-29 16:13 UTCEG score recompute
  6. 2026-10-29 16:13 UTCGHSA enrichmentGHSA-f359-r3pv-2phf
  7. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  8. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  9. 2026-10-26 21:43 UTCEG score recompute
  10. 2026-10-26 21:42 UTCGHSA enrichmentGHSA-f359-r3pv-2phf
  11. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  12. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  13. 2026-10-25 14:34 UTCEG score recompute
  14. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  15. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  16. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  17. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  18. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  19. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  20. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  21. 2026-10-18 03:46 UTCEG score recompute
  22. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  23. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  24. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  25. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
Show 72 more
  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  3. 2026-10-12 16:03 UTCEG score recompute
  4. 2026-10-12 16:02 UTCGHSA enrichmentGHSA-f359-r3pv-2phf
  5. 2026-10-11 19:55 UTCEG score recompute
  6. 2026-10-11 17:08 UTCEG score recompute
  7. 2026-10-11 14:35 UTCEG score recompute
  8. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  9. 2026-10-11 04:01 UTCOSV refresh
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  12. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  13. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  14. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  15. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  16. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  17. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  18. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  20. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  21. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  22. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  23. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  24. 2026-09-21 16:19 UTCOSV refresh
  25. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  26. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  27. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  28. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  29. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  30. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  31. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  32. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  33. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  34. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  35. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  36. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  37. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  38. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  39. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  40. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  41. 2026-09-02 13:14 UTCOSV refresh
  42. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  43. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  44. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  45. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  46. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  47. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  48. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  49. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  50. 2026-08-24 14:17 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  51. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  52. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  53. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  54. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  55. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  56. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  57. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  58. 2026-08-16 10:00 UTCEG score recompute
  59. 2026-08-16 10:00 UTCGHSA enrichmentGHSA-f359-r3pv-2phf
  60. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  61. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  62. 2026-08-14 06:18 UTCEG score recompute
  63. 2026-08-14 06:18 UTCGHSA enrichmentGHSA-f359-r3pv-2phf
  64. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  65. 2026-08-12 20:37 UTCEG score recompute
  66. 2026-08-12 20:37 UTCGHSA enrichmentGHSA-f359-r3pv-2phf
  67. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  68. 2026-08-11 08:29 UTCEG score recompute
  69. 2026-08-11 08:29 UTCGHSA enrichmentGHSA-f359-r3pv-2phf
  70. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  71. 2026-08-10 07:10 UTCEG score recompute
  72. 2026-08-10 07:10 UTCGHSA enrichmentGHSA-f359-r3pv-2phf

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Frequently asked(5)

What is CVE-2026-33766?
CVE-2026-33766 is a medium-severity vulnerability; its CVE record was published on March 27, 2026. WWBN AVideo is an open source video platform. In versions up to and including 26.0, isSSRFSafeURL() validates URLs against private/reserved IP ranges before fetching, but url_get_contents() follows HTTP redirects without re-validating the redirect target. An attacker can bypass SSRF protection by…
When was the CVE record for CVE-2026-33766 published?
The CVE record for CVE-2026-33766 was published on March 27, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 26, 2026; the record at its source may have been updated since.
Is CVE-2026-33766 actively exploited?
CVE-2026-33766 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (15th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-33766?
CVE-2026-33766 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-33766?
A fix for CVE-2026-33766 is available: update to the fixed version the vendor names in its advisory.

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