6.5

CVE-2025-23047: cilium

CVSS: 6.5v3.1MediumAnalyzed
AliasesCGA-2p59-9rm4-hcrxCGA-35v7-63h2-xp64CGA-6ghj-8p8v-7743
Published 22-01-2025Last modified 12-02-2025
Open JSON

Vulnerability summary

CVE-2025-23047 is a medium (CVSS 6.5) vulnerability in cilium. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 41.8% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.50%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 10
OPENSUSE-SU-2025:14710-1SUSE-SU-2025:0297-1CGA-3VVV-66C4-MMV3CGA-8XMQ-FRQP-RWXMCGA-FG5P-PF8V-388QCGA-JF5P-9X7W-8GF5

Timeline

  1. 22-01-2025
    PublishedVulnerability first disclosed.
  2. 12-02-2025
    Last modifiedVulnerability information updated.

Description

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 metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

0.00 pp

From 0.50% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.50%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard9 products
  • cilium-1.15< 1.15.13-r0
  • cilium-1.16< 1.16.6-r0
  • cilium-fips-1.15< 1.15.13-r0
  • cilium-fips-1.16< 1.16.6-r0
  • hubble< 1.16.6-r0
Wolfi3 products
  • hubble< 1.16.6-r0
  • hubble-ui< 0.13.1-r10
  • hubble-ui-backend< 0.13.1-r10
Cilium1 product
  • cilium≥ 1.14.0, < 1.14.18 | ≥ 1.15.0, < 1.15.12 | ≥ 1.16.0, < 1.16.5 | ≥ 1.14.0, < 1.14.19 | ≥ 1.15.0, < 1.15.13 | ≥ 1.16.0, < 1.16.6
Github.com/cilium1 product
  • cilium≥ 1.14.0, < 1.14.19 | ≥ 1.15.0, < 1.15.13 | ≥ 1.16.0, < 1.16.6

4 vendors · 14 products

References

5 links