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CVE-2023-30429

26
FAUCET Score

CVE-2023-30429 is an Incorrect Authorization vulnerability in Apache Pulsar Function Workers prior to versions 2.10.4 and 2.11.1. When a client connects via a Pulsar Proxy using mTLS, the Function Worker incorrectly authorizes based on the Proxy's role instead of the client's, potentially leading to privilege escalation if the proxy has superuser privileges. This vulnerability has a CVSS score of 8.8 (High), indicating a network attack vector with low complexity and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.10.4CPE 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

9.6CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.1
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.03%
Probability of exploitation in next 30 days
EPSS Percentile
60.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0103 is in the 56th percentile among its peer group of 17,823 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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

Patch Available

Vendor Patches (2)

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

Vendor Advisories (1)

mavenGHSA-g9cv-v3v4-3h8rcritical

Apache Pulsar Incorrect Authorization vulnerability

Jul 12, 2023

References

lists.apache.org / thread/v0gcvvxswr830314q4b1kybsfmcf3jf8
Mailing ListVendor Advisory