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CVE-2023-31442

24
FAUCET Score

CVE-2023-31442 is a vulnerability in Lightbend Akka (versions 2.5.14 through 2.8.0) and Akka Discovery (through 2.8.0) where the async-dns resolver uses predictable DNS transaction IDs, making it susceptible to DNS poisoning. This high-severity vulnerability (CVSS 7.5) can lead to denial of access to intended services or, if service authenticity is not validated, potential exfiltration of application data. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.5.14, < 2.8.1CPE matchmatch criteria
cpe:2.3:a:lightbend:akka_actor:*:*:*:*:*:*:*:*
< 2.8.1CPE matchmatch criteria
cpe:2.3:a:lightbend:akka_discovery:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.65%
Probability of exploitation in next 30 days
EPSS Percentile
47.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0065 is in the 24th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

akka.io / security/akka-async-dns-2023-31442.html
Vendor Advisory
lightbend.com
Product