CVE-2025-23047

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 61% 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
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An insecure default Access-Control-Allow-Origin header value could lead to sensitive data exposure for users of Cilium versions 1.14.0 through 1.14.7, 1.15.0 through 1.15.11, and 1.16.0 through 1.16.4 who deploy Hubble UI using either Cilium CLI or via the Cilium Helm chart. A user with access to a Hubble UI instance affected by this issue could leak configuration details about the Kubernetes cluster which Hubble UI is monitoring, including node names, IP addresses, and other metadata about workloads and the cluster networking configuration. In order for this vulnerability to be exploited, a victim would have to first visit a malicious page. This issue is fixed in Cilium v1.14.18, v1.15.12, and v1.16.5. As a workaround, users who deploy Hubble UI using the Cilium Helm chart directly can remove the CORS headers from the Helm template as shown in the patch from commit a3489f190ba6e87b5336ee685fb6c80b1270d06d.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
40%
KEV
Not listed

Published

January 22, 2025

Last Modified

September 3, 2025

References (2)

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/cilium/cilium—1.16.6—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 40× 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 105 total refreshes for this CVE.

  1. 2026-08-07 16:26 UTCEPSS rescore
  2. 2026-08-06 13:46 UTCEPSS rescore
  3. 2026-08-05 19:16 UTCEPSS rescore
  4. 2026-08-04 15:09 UTCEPSS rescore
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  15. 2026-07-24 17:11 UTCOSV refresh
  16. 2026-07-24 14:17 UTCEPSS rescore
  17. 2026-07-23 14:17 UTCEPSS rescore
  18. 2026-07-23 02:50 UTCEG score recompute
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  25. 2026-07-19 02:28 UTCEPSS rescore
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  1. 2026-07-19 02:28 UTCEPSS rescore
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  3. 2026-07-16 17:02 UTCEPSS rescore
  4. 2026-07-15 16:57 UTCEPSS rescore
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  6. 2026-07-15 01:59 UTCEPSS rescore
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  13. 2026-07-11 08:27 UTCEPSS rescore
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  15. 2026-07-09 19:09 UTCEPSS rescore
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  17. 2026-07-07 13:45 UTCEPSS rescore
  18. 2026-07-07 12:51 UTCOSV refresh
  19. 2026-07-06 02:22 UTCEPSS rescore
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  21. 2026-07-05 02:30 UTCEPSS rescore
  22. 2026-07-04 06:30 UTCEPSS rescore
  23. 2026-07-01 15:06 UTCEPSS rescore
  24. 2026-06-30 23:21 UTCEPSS rescore
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  26. 2026-06-29 14:06 UTCEPSS rescore
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  37. 2026-06-23 21:32 UTCEPSS rescore
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  39. 2026-06-22 14:25 UTCEPSS rescore
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  41. 2026-06-21 14:56 UTCEPSS rescore
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  43. 2026-06-21 01:59 UTCEPSS rescore
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  45. 2026-06-19 19:25 UTCEPSS rescore
  46. 2026-06-19 19:25 UTCEPSS rescore
  47. 2026-06-18 23:44 UTCOSV refresh
  48. 2026-06-18 17:52 UTCEPSS rescore
  49. 2026-06-18 17:52 UTCEPSS rescore
  50. 2026-06-17 17:52 UTCEPSS rescore
  51. 2026-06-16 17:52 UTCEPSS rescore
  52. 2026-06-16 17:52 UTCEPSS rescore
  53. 2026-06-15 17:48 UTCEPSS rescore
  54. 2026-06-14 23:17 UTCEPSS rescore
  55. 2026-06-13 22:59 UTCEPSS rescore
  56. 2026-06-12 23:11 UTCEPSS rescore
  57. 2026-06-11 13:59 UTCEPSS rescore
  58. 2026-06-10 22:18 UTCEPSS rescore
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  60. 2026-06-08 14:16 UTCEPSS rescore
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  62. 2026-06-07 15:24 UTCEPSS rescore
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  64. 2026-06-06 13:47 UTCEPSS rescore
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  66. 2026-06-05 22:46 UTCEPSS rescore
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  68. 2026-06-05 06:10 UTCEPSS rescore
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  70. 2026-06-02 20:12 UTCEPSS rescore
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  72. 2026-06-01 13:51 UTCEPSS rescore
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  74. 2026-05-31 22:30 UTCEPSS rescore
  75. 2026-05-31 22:30 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-23047?
CVE-2025-23047 is a medium vulnerability published on January 22, 2025. Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An insecure default Access-Control-Allow-Origin header value could lead to sensitive data exposure for users of Cilium versions 1.14.0 through 1.14.7, 1.15.0 through 1.15.11, and 1.16.0 through 1.16.4 who…
When was CVE-2025-23047 disclosed?
CVE-2025-23047 was first published in the National Vulnerability Database on January 22, 2025, with the most recent update on September 3, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-23047 actively exploited?
CVE-2025-23047 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 60.5% of all scored CVEs.
What is the CVSS score of CVE-2025-23047?
CVE-2025-23047 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2025-23047?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-23047, 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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