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NVD description
External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Versions 2.2.0 and below contain a vulnerability in runtime/template/v2/template.go where the v2 template engine removes env and expandenv from Sprig's TxtFuncMap() but leaves the getHostByName function accessible to user-controlled templates. Since ESO executes templates within the controller process, an attacker who can create or update templated ExternalSecret resources can invoke controller-side DNS lookups using secret-derived values. This creates a DNS exfiltration primitive, allowing fetched secret material to be leaked via DNS queries without requiring direct outbound network access from the attacker's workload. The impact is a confidentiality issue, particularly in environments where untrusted or lower-trust users can author templated ExternalSecret resources and the controller has DNS resolution capability. This issue has been fixed in version 2.3.0.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
| Date | Total | Labels |
|---|
| 2026-04-14 | 2 | Disclosure1General1 |
| 2026-04-15 | 1 | General1 |
⚡ New CVE Alert: CVE-2026-34984 📊 Severity: 7.1 🚨 Risk Level: High 🧩 Affects: Multiple / Unspecified Products Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-34984 #CVE-2026-34984 #CVE #High #CyberSecurity #InfoSec https://t.co/RIxVkmyfQb
Post summary
The tweet announces CVE-2026-34984 with a severity score of 7.1 for unspecified products, but provides no technical details, exploits, or mitigation information.
CVE-2026-34984 External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Versions 2.2.0 and below contain a … https://www.cve.org/CVERecord?id=CVE-2026-34984
Post summary
CVE-2026-34984 involves External Secrets Operator reading external data and injecting it as Kubernetes Secrets in versions ≤2.2.0, but the post offers no PoC, patch, or exploitation details.
CVE-2026-34984 DNS Exfiltration in External Secrets Operator Versions 2.... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-34984 Don't wait vulnerability scanning results: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=2
Post summary
The tweet briefly announces CVE-2026-34984, citing DNS exfiltration in External Secrets Operator, and directs readers to a vulnerability details page and an alert link, with no further technical or operational information.
1 of 1 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | external-secrets | external_secrets_operator | - | - | - |