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CVE-2023-31039

30
FAUCET Score

CVE-2023-31039 is a critical arbitrary code execution vulnerability affecting Apache bRPC versions prior to 1.5.0. An attacker can exploit this by manipulating the ServerOptions::pid_file parameter during server startup, leading to code execution with the bRPC process's permissions. With a CVSS score of 9.8 (Critical), this vulnerability has a network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.9.0, < 1.5.0CPE matchmatch criteria
cpe:2.3:a:apache:brpc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.52%
Probability of exploitation in next 30 days
EPSS Percentile
72.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0152 is in the 59th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.apache.org / thread/jqpttrqbc38yhckgp67xk399hqxnz7jn
Mailing ListPatchVendor Advisory
openwall.com / lists/oss-security/2023/05/08/1
Mailing ListPatchThird Party Advisory