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NVD / CVE Program· CNA apache

CVE-2025-30677: Apache Pulsar IO Kafka Connector, Apache Pulsar IO Kafka Connect Adaptor: Sensitive information logged in Pulsar's Apache Kafka Connectors

Noroxi assessment

Priority: Monitor (action score 25/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.74% (FIRST EPSS); higher than 54.8% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Apache Software Foundation Apache Pulsar IO Kafka Connect Adaptor 3.0.11, 3.3.6, 4.0.4; Apache Software Foundation Apache Pulsar IO Kafka Connector 3.0.11, 3.3.6, 4.0.4.

Low priority for now. Upgrade to Apache Software Foundation Apache Pulsar IO Kafka Connect Adaptor 3.0.11, 3.3.6, 4.0.4; Apache Software Foundation Apache Pulsar IO Kafka Connector 3.0.11, 3.3.6, 4.0.4 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Apache Pulsar contains multiple connectors for integrating with Apache Kafka. The Pulsar IO Apache Kafka Source Connector, Sink Connector, and Kafka Connect Adaptor Sink Connector log sensitive configuration properties in plain text in application logs. This vulnerability can lead to unintended exposure of credentials in log files, potentially allowing attackers with access to these logs to obtain Apache Kafka credentials. The vulnerability's impact is limited by the fact that an attacker would need access to the application logs to exploit this issue. This issue affects Apache Pulsar IO's Apache Kafka connectors in all versions before 3.0.11, 3.3.6, and 4.0.4. 3.0.x version users should upgrade to at least 3.0.11. 3.3.x version users should upgrade to at least 3.3.6. 4.0.x version users should upgrade to at least 4.0.4. Users operating versions prior to those listed above should upgrade to the aforementioned patched versions or newer versions.

MediumCVSS 6.3 · v4.0—No exploit Fix available
Published
Apr 9, 2025
Updated
Jun 17, 2026
EPSS
0.7% · 54th percentile

Report tools

JSON

Action score

25

Monitor

Low priority for now.

CVSS
25 / 40 · 6.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · apache
6.3
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-30677

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
apachepulsar

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • apache pulsar2.3.0 and later · before 3.0.11
  • apache pulsar3.3.0 and later · before 3.3.6
  • apache pulsar4.0.0 and later · before 4.0.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (apache). Independent of NVD's CPE analysis and usually ahead of it.

  • Apache Software Foundation Apache Pulsar IO Kafka Connect Adaptor

    • 2.3.0 and later · before 3.0.11affected · semver
    • 3.1.0 and later · before 3.3.6affected · semver
    • 4.0.0 and later · before 4.0.4affected · semver

  • Apache Software Foundation Apache Pulsar IO Kafka Connector

    • 2.3.0 and later · before 3.0.11affected · semver
    • 3.1.0 and later · before 3.3.6affected · semver
    • 4.0.0 and later · before 4.0.4affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Mavenorg.apache.pulsar:pulsar-io-kafkafrom 3.3.0 · before 3.3.63.3.6
Mavenorg.apache.pulsar:pulsar-io-kafkafrom 4.0.0 · before 4.0.44.0.4
Mavenorg.apache.pulsar:pulsar-io-kafkabefore 3.0.113.0.11
Mavenorg.apache.pulsar:pulsar-io-kafka-connect-adaptorfrom 3.3.0 · before 3.3.63.3.6
Mavenorg.apache.pulsar:pulsar-io-kafka-connect-adaptorfrom 4.0.0 · before 4.0.44.0.4
Mavenorg.apache.pulsar:pulsar-io-kafka-connect-adaptorbefore 3.0.113.0.11

Same product

apache: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-27317Apache Pulsar: Pulsar Functions Worker's Archive Extraction Vulnerability Allows Unauthorized File Modification
    56Plan
  • CVE-2021-22160Authentication with JWT allows use of “none”-algorithm
    55Plan
  • CVE-2024-27135Apache Pulsar: Improper Input Validation in Pulsar Function Worker allows Remote Code Execution
    41Plan

Published before and after this one in the same product

  • ← EarlierCVE-2024-27894Mar 12, 2024 · Apache Pulsar: Pulsar Functions Worker Allows Unauthorized File Access and Unauthorized HTTP/HTTPS Proxying
    36Monitor
  • ← EarlierCVE-2024-28098Mar 12, 2024 · Apache Pulsar: Improper Authorization For Topic-Level Policy Management
    22Monitor
  • ← EarlierCVE-2024-29834Apr 2, 2024 · Apache Pulsar: Improper Authorization For Namespace and Topic Management Endpoints
    25Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Apache Software Foundation Apache Pulsar IO Kafka Connect Adaptor3.0.11Vendor (CNA)
Apache Software Foundation Apache Pulsar IO Kafka Connect Adaptor3.3.6Vendor (CNA)
Apache Software Foundation Apache Pulsar IO Kafka Connect Adaptor4.0.4Vendor (CNA)
Apache Software Foundation Apache Pulsar IO Kafka Connector3.0.11Vendor (CNA)
Apache Software Foundation Apache Pulsar IO Kafka Connector3.3.6Vendor (CNA)
Apache Software Foundation Apache Pulsar IO Kafka Connector4.0.4Vendor (CNA)
Maven:org.apache.pulsar:pulsar-io-kafka3.0.11Package registry (OSV)
Maven:org.apache.pulsar:pulsar-io-kafka3.3.6Package registry (OSV)
Maven:org.apache.pulsar:pulsar-io-kafka4.0.4Package registry (OSV)
Maven:org.apache.pulsar:pulsar-io-kafka-connect-adaptor3.0.11Package registry (OSV)
Maven:org.apache.pulsar:pulsar-io-kafka-connect-adaptor3.3.6Package registry (OSV)
Maven:org.apache.pulsar:pulsar-io-kafka-connect-adaptor4.0.4Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-532 · Insertion of Sensitive Information into Log File

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records