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TI-2023-15058 Aliases CVE-2023-31442GHSA-529c-69qr-5h7m

In Lightbend Akka before 2.8.1, the async-dns resolver (used by Discovery in DNS mode and…

Priority MEDIUM 40Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

In Lightbend Akka before 2.8.1, the async-dns resolver (used by Discovery in DNS mode and transitively by Cluster Bootstrap) uses predictable DNS transaction IDs when resolving DNS records, making DNS resolution subject to poisoning by an attacker. If the application performing discovery does not validate (e.g., via TLS) the authenticity of the discovered service, this may result in exfiltration of application data (e.g., persistence events may be published to an unintended Kafka broker). If such validation is performed, then the poisoning constitutes a denial of access to the intended service. This affects Akka 2.5.14 through 2.8.0, and Akka Discovery through 2.8.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00645 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:lightbend:akka_actor:*:*:*:*:*:*:*:*2.5.14 to before 2.8.1VulnerableLightbend
cpe:2.3:a:lightbend:akka_discovery:*:*:*:*:*:*:*:*before 2.8.1VulnerableLightbend
  • cpe:2.3:a:lightbend:akka_actor:*:*:*:*:*:*:*:* Versions 2.5.14 to before 2.8.1 Vulnerable ·Lightbend
  • cpe:2.3:a:lightbend:akka_discovery:*:*:*:*:*:*:*:* Versions before 2.8.1 Vulnerable ·Lightbend

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-31442
  2. 2026-10-03 Alias added: GHSA-529c-69qr-5h7m
  3. 2026-10-20 EPSS moved to the 50th–90th percentile

References

Advisory 1

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences