CVE-2026-81678

HIGHPre-NVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

Score 7.5 from GitHub Security Advisory published 2026-08-27. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (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: 0.4%CVSS: 7.5Exploit: No code on recordExposed services: Not assessed

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

The CVE record's CNA (VulnCheck) lists WWBN AVideo versions before 24.0 as affected, and WWBN AVideo versions 24.0 as unaffected. No release containing a fix is confirmed on record.

AVideo before 24.0 contains a server-side request forgery vulnerability in the isSSRFSafeURL function that fails to extract embedded IPv4 addresses from NAT64, 6to4, and Teredo IPv6 transition address formats. Unauthenticated attackers can bypass SSRF protections via the LiveLinks proxy endpoint to reach internal services and cloud metadata endpoints by encoding private IPv4 targets in transition address formats.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
65
EG Risk 65/100

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 (value × EchelonGraph’s weight)
Severity75% × 45%
The EG Score, 7.5 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
37th
KEV
Not listed

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

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

August 27, 2026

Last Modified

August 29, 2026

Advisory Details (2)

Auto-updated Aug 27, 2026
No fix on record yet. Sources: github.
Web page

AVideo SSRF Guard Bypass via IPv6 Transition Addresses | Advisories | VulnCheck

https://www.vulncheck.com/advisories/avideo-ssrf-guard-bypass-via-ipv6-transition-addresses
GitHub advisoryMentions a patch (unverified)

SSRF guard bypass via IPv6 transition addresses in isSSRFSafeURL (unauthenticated) · Advisory · WWBN/AVideo · GitHub

https://github.com/WWBN/AVideo/security/advisories/GHSA-474r-333v-6p93

Vendor Advisories for CVE-2026-81678(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 20× in last 7d / 104× 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 100 of 179 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. None are among the latest 100 rows. The 79 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  2. 2026-10-13 06:17 UTCEG score recompute
  3. 2026-10-13 06:17 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  4. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  5. 2026-10-12 14:56 UTCEG score recompute
  6. 2026-10-11 19:20 UTCEG score recompute
  7. 2026-10-11 16:37 UTCEG score recompute
  8. 2026-10-11 13:54 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  11. 2026-10-10 13:47 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  12. 2026-10-10 01:55 UTCEG score recompute
  13. 2026-10-10 01:55 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  14. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  15. 2026-10-09 03:07 UTCEG score recompute
  16. 2026-10-09 03:07 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  17. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  18. 2026-10-08 01:20 UTCEG score recompute
  19. 2026-10-08 01:20 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  20. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  21. 2026-10-07 07:07 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  22. 2026-10-06 19:16 UTCEG score recompute
  23. 2026-10-06 19:16 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  24. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  25. 2026-10-06 07:33 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
Show 75 more
  1. 2026-10-05 19:08 UTCEG score recompute
  2. 2026-10-05 19:08 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  3. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  4. 2026-10-05 07:24 UTCEG score recompute
  5. 2026-10-05 07:24 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  6. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  7. 2026-10-04 19:39 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  8. 2026-10-04 07:05 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  9. 2026-10-03 19:21 UTCEG score recompute
  10. 2026-10-03 19:21 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  11. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  12. 2026-10-03 07:06 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  13. 2026-10-02 19:22 UTCEG score recompute
  14. 2026-10-02 19:21 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  15. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  16. 2026-10-02 07:36 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  17. 2026-10-01 19:53 UTCEG score recompute
  18. 2026-10-01 19:53 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  19. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  20. 2026-10-01 07:38 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  21. 2026-09-30 19:55 UTCEG score recompute
  22. 2026-09-30 19:55 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  23. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  24. 2026-09-30 05:02 UTCEG score recompute
  25. 2026-09-30 05:02 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  26. 2026-09-29 12:16 UTCEG score recompute
  27. 2026-09-29 12:16 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  28. 2026-09-28 21:16 UTCEG score recompute
  29. 2026-09-28 21:16 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  30. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  31. 2026-09-28 06:14 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  32. 2026-09-27 18:30 UTCEG score recompute
  33. 2026-09-27 18:30 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  34. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  35. 2026-09-27 06:44 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  36. 2026-09-26 18:45 UTCEG score recompute
  37. 2026-09-26 18:45 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  38. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  39. 2026-09-25 07:07 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  40. 2026-09-24 19:23 UTCEG score recompute
  41. 2026-09-24 19:23 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  42. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  43. 2026-09-24 07:39 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  44. 2026-09-23 19:54 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  45. 2026-09-23 07:06 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  46. 2026-09-22 19:22 UTCEG score recompute
  47. 2026-09-22 19:22 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  48. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  49. 2026-09-22 07:38 UTCEG score recompute
  50. 2026-09-22 07:38 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  51. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  52. 2026-09-21 19:54 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  53. 2026-09-21 08:10 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  54. 2026-09-20 20:26 UTCEG score recompute
  55. 2026-09-20 20:26 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  56. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  57. 2026-09-20 08:42 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  58. 2026-09-19 20:59 UTCEG score recompute
  59. 2026-09-19 20:58 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  60. 2026-09-19 09:14 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  61. 2026-09-18 21:29 UTCEG score recompute
  62. 2026-09-18 21:29 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  63. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  64. 2026-09-18 08:42 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  65. 2026-09-17 20:58 UTCEG score recompute
  66. 2026-09-17 20:58 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  67. 2026-09-17 09:14 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  68. 2026-09-16 21:30 UTCEG score recompute
  69. 2026-09-16 21:30 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  70. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  71. 2026-09-16 09:15 UTCEG score recompute
  72. 2026-09-16 09:15 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  73. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  74. 2026-09-15 21:30 UTCGHSA enrichmentGHSA-pmq2-hv69-w45g · GitHub CVSS 7.5
  75. 2026-09-15 09:46 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81678?
CVE-2026-81678 is a high-severity vulnerability; its CVE record was published on August 27, 2026. AVideo before 24.0 contains a server-side request forgery vulnerability in the isSSRFSafeURL function that fails to extract embedded IPv4 addresses from NAT64, 6to4, and Teredo IPv6 transition address formats. Unauthenticated attackers can bypass SSRF protections via the LiveLinks proxy endpoint to…
When was CVE-2026-81678 made public?
CVE-2026-81678 was made public on August 12, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 27, 2026. EchelonGraph's copy of the record carries a last-modified date of August 29, 2026; the record at its source may have been updated since.
Is CVE-2026-81678 actively exploited?
CVE-2026-81678 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-81678?
CVE-2026-81678 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-81678?
No fix for CVE-2026-81678 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (VulnCheck) lists WWBN AVideo versions before 24.0 as affected, and WWBN AVideo versions 24.0 as unaffected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-81678 are linked in the Vendor Advisories panel on this page.

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