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CVE-2024-27135

32
FAUCET Score

CVE-2024-27135 is a critical vulnerability in Apache Pulsar versions 2.4.0 through 3.2.0, affecting the Pulsar Function Worker and Broker (when functionsWorkerEnabled=true). It allows authenticated attackers to execute arbitrary Java code outside of designated sandboxes due to improper input validation. With a CVSS score of 9.9 (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 (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.4.0, < 2.10.6CPE matchmatch criteria
cpe:2.3:a:apache:pulsar:*:*:*:*:*:*:*:*
>= 2.11.0, < 2.11.4CPE matchmatch criteria
cpe:2.3:a:apache:pulsar:*:*:*:*:*:*:*:*
>= 3.0.0, < 3.0.3CPE matchmatch criteria
cpe:2.3:a:apache:pulsar:*:*:*:*:*:*:*:*
>= 3.1.0, < 3.1.3CPE matchmatch criteria
cpe:2.3:a:apache:pulsar:*:*:*:*:*:*:*:*
3.2.0CPE matchmatch criteria
cpe:2.3:a:apache:pulsar:3.2.0:-:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.98%
Probability of exploitation in next 30 days
EPSS Percentile
92.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0598 is in the 93rd percentile among its peer group of 1,124 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 1.0 Bluesky, 0.5 Mastodon, and 1.6 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

Patch Available

Vendor Patches (6)

mavenpatch availablevia ghsa
Product: org.apache.pulsar:pulsar-functions-workerFixed in: 2.10.6
mavenpatch availablevia ghsa
Product: org.apache.pulsar:pulsar-functions-workerFixed in: 2.11.4
mavenpatch availablevia ghsa
Product: org.apache.pulsar:pulsar-functions-workerFixed in: 3.0.3
mavenpatch availablevia ghsa
Product: org.apache.pulsar:pulsar-functions-workerFixed in: 3.1.3
mavenpatch availablevia ghsa
Product: org.apache.pulsar:pulsar-functions-workerFixed in: 3.2.1
redhatend of lifevia redhat_api
Product: Red Hat Integration Camel K 1Fixed in: apache-pulsar

Vendor Advisories (2)

mavenGHSA-xp2r-g8qq-44hhhigh

Apache Pulsar: Improper Input Validation in Pulsar Function Worker allows Remote Code Execution

Mar 12, 2024
redhatCVE-2024-27135Important

apache-pulsar: Improper Input Validation in Pulsar Function Worker allows Remote Code Execution

Mar 12, 2024

References

lists.apache.org / thread/dh8nj2vmb2br6thjltq74lk9jxkz62wn
Vendor Advisory
pulsar.apache.org / security/CVE-2024-27135
Vendor Advisory
openwall.com / lists/oss-security/2024/03/12/9
Mailing ListThird Party Advisory