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CVE-2023-31007

20
FAUCET Score

CVE-2023-31007 is an Improper Authentication vulnerability in Apache Pulsar Broker versions through 2.9.4, 2.10.0 through 2.10.3, and 2.11.0. This flaw allows a client to maintain a connection to a broker even after their authentication data has expired, either by connecting through a Pulsar Proxy with authenticateOriginalAuthData=false or by directly connecting with a specially crafted command under the same broker configuration. Rated with a CVSS score of 6.5 (Medium), the vulnerability has a network attack vector, low attack complexity, and a high impact on integrity, with no confidentiality or availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.9.5CPE matchmatch criteria
cpe:2.3:a:apache:pulsar:*:*:*:*:*:*:*:*
>= 2.10.0, <= 2.10.3CPE matchmatch criteria
cpe:2.3:a:apache:pulsar:*:*:*:*:*:*:*:*
2.11.0CPE matchmatch criteria
cpe:2.3:a:apache:pulsar:2.11.0:-:*:*:*:*:*:*
2.11.0CPE matchmatch criteria
cpe:2.3:a:apache:pulsar:2.11.0:candidate_1:*:*:*:*:*:*
2.11.0CPE matchmatch criteria
cpe:2.3:a:apache:pulsar:2.11.0:candidate_5:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

0.0NONE

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
0.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.02%
Probability of exploitation in next 30 days
EPSS Percentile
59.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0102 is in the 73rd percentile among its peer group of 21,977 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.apache.pulsar:pulsar-brokerFixed in: 2.10.4
mavenpatch availablevia ghsa
Product: org.apache.pulsar:pulsar-brokerFixed in: 2.11.1

Vendor Advisories (1)

mavenGHSA-47r2-phr8-m8cpmedium

Apache Pulsar Broker Improper Authentication vulnerability

Jul 12, 2023

References

lists.apache.org / thread/qxn99xxyp0zv6jchjggn3soyo5gvqfxj
Mailing ListVendor Advisory