CVE-2024-39694

MEDIUMNVD 4.74.7—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.7 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 66% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
4.7
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 4.7Exploit: NoneExposed: 0

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

Duende IdentityServer is an OpenID Connect and OAuth 2.x framework for ASP.NET Core. It is possible for an attacker to craft malicious Urls that certain functions in IdentityServer will incorrectly treat as local and trusted. If such a Url is returned as a redirect, some browsers will follow it to a third-party, untrusted site. Note: by itself, this vulnerability does not allow an attacker to obtain user credentials, authorization codes, access tokens, refresh tokens, or identity tokens. An attacker could however exploit this vulnerability as part of a phishing attack designed to steal user credentials. This vulnerability is fixed in 7.0.6, 6.3.10, 6.2.5, 6.1.8, and 6.0.5. Duende.IdentityServer 5.1 and earlier and all versions of IdentityServer4 are no longer supported and will not be receiving updates. If upgrading is not possible, use IUrlHelper.IsLocalUrl from ASP.NET Core to validate return Urls in user interface code in the IdentityServer host.

CVSS v3
4.7
EG Score
4.7(medium)
EPSS
41.3%
KEV
Not listed

Published

July 31, 2024

Last Modified

April 15, 2026

References (6)

Affected Packages

(2 across 1 ecosystem)
NuGet(2)
PackageVulnerable rangeFixed inDependents
Duende.IdentityServer6.0.0, 6.0.1, 6.0.2, 6.0.3, 6.0.46.0.5—
IdentityServer41.0.0 ... 4.1.2 (81 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 47× 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 102 total refreshes for this CVE.

  1. 2026-07-12 05:45 UTCEPSS rescore
  2. 2026-07-11 08:26 UTCEPSS rescore
  3. 2026-07-11 08:26 UTCEPSS rescore
  4. 2026-07-11 03:11 UTCOSV refresh
  5. 2026-07-09 19:09 UTCEPSS rescore
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  1. 2026-06-24 14:04 UTCEPSS rescore
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  4. 2026-06-22 14:25 UTCEPSS rescore
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  6. 2026-06-22 10:32 UTCOSV refresh
  7. 2026-06-21 14:55 UTCEPSS rescore
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  9. 2026-06-21 01:58 UTCEPSS rescore
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  22. 2026-06-12 23:11 UTCEPSS rescore
  23. 2026-06-11 13:59 UTCEPSS rescore
  24. 2026-06-10 22:17 UTCEPSS rescore
  25. 2026-06-10 13:21 UTCEPSS rescore
  26. 2026-06-08 14:16 UTCEPSS rescore
  27. 2026-06-07 15:24 UTCEPSS rescore
  28. 2026-06-07 15:24 UTCEPSS rescore
  29. 2026-06-06 13:46 UTCEPSS rescore
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  35. 2026-06-04 13:39 UTCOSV refresh
  36. 2026-06-04 13:11 UTCEPSS rescore
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  38. 2026-06-02 20:12 UTCEPSS rescore
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  41. 2026-05-31 22:30 UTCEPSS rescore
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  45. 2026-05-29 13:43 UTCEPSS rescore
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  49. 2026-05-27 13:40 UTCEPSS rescore
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  54. 2026-05-26 07:18 UTCEPSS rescore
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  57. 2026-05-23 00:09 UTCEG score recompute
  58. 2026-05-22 21:16 UTCEPSS rescore
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  62. 2026-05-22 00:00 UTCEG score recompute
  63. 2026-05-21 22:42 UTCEPSS rescore
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  74. 2026-05-18 21:30 UTCEPSS rescore
  75. 2026-05-18 21:30 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2024-39694?
CVE-2024-39694 is a medium vulnerability published on July 31, 2024. Duende IdentityServer is an OpenID Connect and OAuth 2.x framework for ASP.NET Core. It is possible for an attacker to craft malicious Urls that certain functions in IdentityServer will incorrectly treat as local and trusted. If such a Url is returned as a redirect, some browsers will follow it to…
When was CVE-2024-39694 disclosed?
CVE-2024-39694 was first published in the National Vulnerability Database on July 31, 2024, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-39694 actively exploited?
CVE-2024-39694 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 41.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-39694?
CVE-2024-39694 has a CVSS v3 base score of 4.7 (NVD).
How do I remediate CVE-2024-39694?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-39694, 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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