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CVE-2024-27317

60
FAUCET Score

CVE-2024-27317 is a critical directory traversal vulnerability in Apache Pulsar Functions Worker and Broker (when functionsWorkerEnabled=true), affecting multiple versions from 2.4.0 up to 3.2.0. Authenticated attackers can upload malicious jar or nar files containing specially crafted filenames with ".." sequences, allowing them to create or modify arbitrary files outside the intended extraction directory. This vulnerability carries a CVSS score of 9.9 (Critical) due to its network-based attack vector, 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
>= 2.4.0, < 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

8.4HIGH

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

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

Exploit Intelligence

EPSS Score
56.93%
Probability of exploitation in next 30 days
EPSS Percentile
99.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.5693 is in the 98th percentile among its peer group of 1,128 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 Fuse 7Fixed in: apache-pulsar

Vendor Advisories (2)

mavenGHSA-jg2g-4rjg-cmqhcritical

Apache Pulsar: Pulsar Functions Worker's Archive Extraction Vulnerability Allows Unauthorized File Modification

Mar 12, 2024
redhatCVE-2024-27317Important

apache-pulsar: Pulsar Functions Worker's Archive Extraction Vulnerability Allows Unauthorized File Modification

Mar 12, 2024

References

lists.apache.org / thread/ct9xmvlf7lompc1pxvlsb60qstfsm9po
Vendor Advisory
pulsar.apache.org / security/CVE-2024-27317
Vendor Advisory
openwall.com / lists/oss-security/2024/03/12/10
Mailing ListThird Party Advisory