CVE-2026-85676

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-09-04. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

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

Dub contains an open redirect vulnerability in the redir_url query parameter that is accepted on every short link without validation or domain allowlist enforcement. Attackers can append the redir_url parameter to any short link to redirect visitors to arbitrary external URLs through the trusted Dub domain, bypassing destination blacklists and potentially enabling phishing attacks with link cloaking enabled.

CVSS v3
4.3
EG Score
4.3(high)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 14, 2026

Advisory Details (4)

Auto-updated Sep 4, 2026
No patch confirmed yet.
generic

Dub Open Redirect via Unrestricted redir_url Parameter | Advisories | VulnCheck

https://www.vulncheck.com/advisories/dub-open-redirect-via-unrestricted-redir-url-parameter
generic

dub/apps/web/lib/middleware/utils/get-final-url.ts at 73415cf5e6be13ce9adb7ba5e97474307db34a17 · dubinc/dub · GitHub

https://github.com/dubinc/dub/blob/73415cf5e6be13ce9adb7ba5e97474307db34a17/apps/web/lib/middleware/utils/get-final-url.ts
generic

GitHub - dubinc/dub: The modern link attribution platform. Loved by world-class marketing teams like Framer, Perplexity, Superhuman, Twilio, Buffer and more. · GitHub

https://github.com/dubinc/dub
generic

Open Redirect via Unrestricted redir_url Parameter on All Short Links · Issue #4337 · dubinc/dub · GitHub

https://github.com/dubinc/dub/issues/4337

Vendor Advisories for CVE-2026-85676(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 24× in last 7d / 49× 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. 2026-09-20 22:19 UTCEG score recompute
  2. 2026-09-20 22:19 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-19 22:05 UTCEG score recompute
  5. 2026-09-19 22:05 UTCGHSA enrichment
  6. 2026-09-18 21:47 UTCEG score recompute
  7. 2026-09-18 21:47 UTCGHSA enrichment
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-17 21:33 UTCEG score recompute
  10. 2026-09-17 21:33 UTCGHSA enrichment
  11. 2026-09-17 19:32 UTCEPSS rescore
  12. 2026-09-16 21:19 UTCEG score recompute
  13. 2026-09-16 21:19 UTCGHSA enrichment
  14. 2026-09-16 14:09 UTCEPSS rescore
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 20:52 UTCEG score recompute
  17. 2026-09-15 20:52 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-14 20:27 UTCEG score recompute
  21. 2026-09-14 20:27 UTCGHSA enrichment
  22. 2026-09-14 19:40 UTCEG score recompute
  23. 2026-09-14 19:40 UTCGHSA enrichment
  24. 2026-09-14 18:22 UTCGHSA enrichment
  25. 2026-09-13 17:57 UTCEG score recompute
Show 24 more
  1. 2026-09-13 17:57 UTCGHSA enrichment
  2. 2026-09-12 17:43 UTCEG score recompute
  3. 2026-09-12 17:43 UTCGHSA enrichment
  4. 2026-09-11 17:29 UTCEG score recompute
  5. 2026-09-11 17:29 UTCGHSA enrichment
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-10 17:15 UTCEG score recompute
  9. 2026-09-10 17:14 UTCGHSA enrichment
  10. 2026-09-09 16:56 UTCEG score recompute
  11. 2026-09-09 16:56 UTCGHSA enrichment
  12. 2026-09-08 22:01 UTCEPSS rescore
  13. 2026-09-08 16:22 UTCGHSA enrichment
  14. 2026-09-07 16:07 UTCEG score recompute
  15. 2026-09-07 16:06 UTCGHSA enrichment
  16. 2026-09-06 15:53 UTCEG score recompute
  17. 2026-09-06 15:53 UTCGHSA enrichment
  18. 2026-09-06 13:48 UTCEPSS rescore
  19. 2026-09-05 15:38 UTCEG score recompute
  20. 2026-09-05 15:38 UTCGHSA enrichment
  21. 2026-09-05 15:31 UTCEPSS rescore
  22. 2026-09-04 15:23 UTCEG score recompute
  23. 2026-09-04 14:45 UTCEG score recompute
  24. 2026-09-04 14:44 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85676?
CVE-2026-85676 is a medium vulnerability published on September 4, 2026. Dub contains an open redirect vulnerability in the redirurl query parameter that is accepted on every short link without validation or domain allowlist enforcement. Attackers can append the redirurl parameter to any short link to redirect visitors to arbitrary external URLs through the trusted Dub…
When was CVE-2026-85676 disclosed?
CVE-2026-85676 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85676 actively exploited?
CVE-2026-85676 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 84.3% of all scored CVEs.
What is the CVSS score of CVE-2026-85676?
CVE-2026-85676 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-85676?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85676, 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-2026-85676

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