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No exploitation reportedFix available

CVE-2024-27135

No exploitation reported by the sources we read.

  • Published2024-03-12
  • Fixed in3.2.1 · 3.1.3 · 3.0.3 · 2.11.4 · 2.10.6
  • WeaknessCWE-20 · CWE-913

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Improper input validation in the Pulsar Function Worker allows a malicious authenticated user to execute arbitrary Java code on the Pulsar Function worker, outside of the sandboxes designated for running user-provided functions. This vulnerability also applies to the Pulsar Broker when it is configured with "functionsWorkerEnabled=true". This issue affects Apache Pulsar versions from 2.4.0 to 2.10.5, from 2.11.0 to 2.11.3, from 3.0.0 to 3.0.2, from 3.1.0 to 3.1.2, and 3.2.0. 2.10 Pulsar Function Worker users should upgrade to at least 2.10.6. 2.11 Pulsar Function Worker users should upgrade to at least 2.11.4. 3.0 Pulsar Function Worker users should upgrade to at least 3.0.3. 3.1 Pulsar Function Worker users should upgrade to at least 3.1.3. 3.2 Pulsar Function Worker users should upgrade to at least 3.2.1. Users operating versions prior to those listed above should upgrade to the aforementioned patched versions or newer versions.

Timeline

dates in UTC
  1. 2024-03-1219:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2024-27135?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2024-27135?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

CISA-ADP · NVD
Apache pulsar
BranchAffectedFixed in
3.2≥ 3.2.0, < 3.2.13.2.1
3.1≥ 3.1.0, < 3.1.33.1.3
3.0≥ 3.0.0, < 3.0.33.0.3
2.11≥ 2.11.0, < 2.11.42.11.4
2.x≥ 2.4.0, < 2.10.62.10.6
3.2= 3.2.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Apache pulsar to 3.2.1 · 3.1.3 · 3.0.3 · 2.11.4 · 2.10.6

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2024-03-13
  • OpenCVESSVC decisionnone—
  • CNACVSS 3.18.5read 2026-10-23
  • NVDCVSS 3.19.9read 2026-10-23
  • CNAweakness (CWE)CWE-20, CWE-913read 2026-10-23
  • FIRST EPSSEPSS score6.0 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
2024-03-12
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2024-27135?

Improper input validation in the Pulsar Function Worker allows a malicious authenticated user to execute arbitrary Java code on the Pulsar Function worker, outside of the sandboxes designated for running user-provided functions. This vulnerability also applies to the Pulsar Broker when it is configured with "functionsWorkerEnabled=true". This issue affects Apache Pulsar versions from 2.4.0 to 2.10.5, from 2.11.0 to 2.11.3, from 3.0.0 to 3.0.2, from 3.1.0 to 3.1.2, and 3.2.0. 2.10 Pulsar Function Worker users should upgrade to at least 2.10.6. 2.11 Pulsar Function Worker users should upgrade to at least 2.11.4. 3.0 Pulsar Function Worker users should upgrade to at least 3.0.3. 3.1 Pulsar Function Worker users should upgrade to at least 3.1.3. 3.2 Pulsar Function Worker users should upgrade to at least 3.2.1. Users operating versions prior to those listed above should upgrade to the aforementioned patched versions or newer versions.

Is CVE-2024-27135 actively exploited?

Active exploitation of CVE-2024-27135 has not been confirmed. Its EPSS score was 6.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-27135?

CVE-2024-27135 has a CVSS v3 base score of 9.9 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

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