CVE-2024-39687

HIGHNVD 7.27.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.2 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 77% 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
7.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.2Exploit: NoneExposed: 0

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

Fedify is a TypeScript library for building federated server apps powered by ActivityPub and other standards. At present, when Fedify needs to retrieve an object or activity from a remote activitypub server, it makes a HTTP request to the @id or other resources present within the activity it has received from the web. This activity could reference an @id that points to an internal IP address, allowing an attacker to send request to resources internal to the fedify server's network. This applies to not just resolution of documents containing activities or objects, but also to media URLs as well. Specifically this is a Server Side Request Forgery attack. Users should upgrade to Fedify version 0.9.2, 0.10.1, or 0.11.1 to receive a patch for this issue.

CVSS v3
7.2
EG Score
7.2(medium)
EPSS
44.6%
KEV
Not listed

Published

July 5, 2024

Last Modified

April 15, 2026

References (6)

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
@fedify/fedify—0.11.2—

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 03:41 UTCOSV refresh
  5. 2026-07-09 19:09 UTCEPSS rescore
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  15. 2026-06-30 23:21 UTCEPSS rescore
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  24. 2026-06-25 13:49 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
  5. 2026-06-22 14:25 UTCEPSS rescore
  6. 2026-06-22 11:02 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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  11. 2026-06-19 19:25 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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  31. 2026-06-05 22:46 UTCEPSS rescore
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  33. 2026-06-05 06:09 UTCEPSS rescore
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  35. 2026-06-04 15:09 UTCOSV refresh
  36. 2026-06-04 13:11 UTCEPSS rescore
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  38. 2026-06-02 20:12 UTCEPSS rescore
  39. 2026-06-01 13:51 UTCEPSS rescore
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  41. 2026-05-31 22:30 UTCEPSS rescore
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  43. 2026-05-31 00:15 UTCEPSS rescore
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  45. 2026-05-29 13:43 UTCEPSS rescore
  46. 2026-05-28 13:44 UTCEPSS rescore
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  48. 2026-05-28 13:44 UTCEPSS rescore
  49. 2026-05-27 13:40 UTCEPSS rescore
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  52. 2026-05-26 13:43 UTCEPSS rescore
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  54. 2026-05-26 07:18 UTCEPSS rescore
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  56. 2026-05-26 07:18 UTCEPSS rescore
  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 00:31 UTCEG score recompute
  63. 2026-05-21 22:42 UTCEPSS rescore
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  65. 2026-05-20 22:37 UTCEPSS rescore
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  69. 2026-05-20 11:21 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-2024-39687?
CVE-2024-39687 is a high vulnerability published on July 5, 2024. Fedify is a TypeScript library for building federated server apps powered by ActivityPub and other standards. At present, when Fedify needs to retrieve an object or activity from a remote activitypub server, it makes a HTTP request to the @id or other resources present within the activity it has…
When was CVE-2024-39687 disclosed?
CVE-2024-39687 was first published in the National Vulnerability Database on July 5, 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-2024-39687 actively exploited?
CVE-2024-39687 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 44.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-39687?
CVE-2024-39687 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2024-39687?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-39687, 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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