CVE-2026-86187

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreHIGH confidence

Score 5.9 from GitHub Security Advisory (severity: HIGH) published 2026-09-05. a secondary CVSS source baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.9Exploit: None knownExposed: 0

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

WWBN AVideo generates passwords for external-login accounts using rand() instead of a cryptographic generator, producing only 31-bit integers. Attackers with access to password hashes can recover plaintext passwords in minutes through offline brute-force attacks due to unsalted MD5-based hashing.

CVSS v3
5.9
EG Score
5.9(high)
EG Risk
27(Track)
EG Risk 27/100SSVC: 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
Severity59% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

September 5, 2026

Last Modified

September 10, 2026

Advisory Details (2)

Auto-updated Sep 5, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

WWBN AVideo Weak PRNG Password Generation via External Login | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wwbn-avideo-weak-prng-password-generation-via-external-login
github Patch Available🟡 PoC Available

Use of a Cryptographically Weak PRNG: accounts created by external-login flows are given a rand() password, recoverable from its unsalted hash in minutes · Advisory · WWBN/AVideo · GitHub

https://github.com/WWBN/AVideo/security/advisories/GHSA-h3ff-c2qq-pr2g

Vendor Advisories for CVE-2026-86187(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 / 43× 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. 2026-09-19 02:58 UTCEG score recompute
  2. 2026-09-19 02:58 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 04:28 UTCEG score recompute
  5. 2026-09-18 04:28 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 05:59 UTCEG score recompute
  8. 2026-09-17 05:59 UTCGHSA enrichment
  9. 2026-09-16 14:09 UTCEPSS rescore
  10. 2026-09-16 07:25 UTCEG score recompute
  11. 2026-09-16 07:25 UTCGHSA enrichment
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-15 08:55 UTCEG score recompute
  14. 2026-09-15 08:55 UTCGHSA enrichment
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-14 10:25 UTCEG score recompute
  18. 2026-09-14 10:25 UTCGHSA enrichment
  19. 2026-09-13 11:55 UTCEG score recompute
  20. 2026-09-13 11:55 UTCGHSA enrichment
  21. 2026-09-12 13:25 UTCGHSA enrichment
  22. 2026-09-11 14:55 UTCEG score recompute
  23. 2026-09-11 14:55 UTCGHSA enrichment
  24. 2026-09-11 14:53 UTCEPSS rescore
  25. 2026-09-11 14:53 UTCEPSS rescore
Show 18 more
  1. 2026-09-10 16:25 UTCEG score recompute
  2. 2026-09-10 16:25 UTCGHSA enrichment
  3. 2026-09-10 15:27 UTCEG score recompute
  4. 2026-09-10 15:27 UTCGHSA enrichment
  5. 2026-09-09 18:44 UTCEG score recompute
  6. 2026-09-09 18:44 UTCGHSA enrichment
  7. 2026-09-08 22:01 UTCEPSS rescore
  8. 2026-09-08 20:14 UTCGHSA enrichment
  9. 2026-09-08 09:58 UTCEG score recompute
  10. 2026-09-08 09:58 UTCGHSA enrichment
  11. 2026-09-07 10:25 UTCEG score recompute
  12. 2026-09-07 10:25 UTCGHSA enrichment
  13. 2026-09-06 13:48 UTCEPSS rescore
  14. 2026-09-06 11:55 UTCEG score recompute
  15. 2026-09-06 11:54 UTCGHSA enrichment
  16. 2026-09-05 13:23 UTCEG score recompute
  17. 2026-09-05 12:34 UTCEG score recompute
  18. 2026-09-05 12:32 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-86187?
CVE-2026-86187 is a medium vulnerability published on September 5, 2026. WWBN AVideo generates passwords for external-login accounts using rand() instead of a cryptographic generator, producing only 31-bit integers. Attackers with access to password hashes can recover plaintext passwords in minutes through offline brute-force attacks due to unsalted MD5-based hashing.
When was CVE-2026-86187 disclosed?
CVE-2026-86187 was first published in the National Vulnerability Database on September 5, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86187 actively exploited?
CVE-2026-86187 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 87.3% of all scored CVEs.
What is the CVSS score of CVE-2026-86187?
CVE-2026-86187 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2026-86187?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86187, 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-2026-86187

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