How severe is CVE-2024-45772?

CVE-2024-45772 has a CVSS score of 5.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2024-45772?

CVE-2024-45772 affects the following packages: org.apache.lucene:lucene-replicator (Maven). Ecosystems affected: Maven.

How do I fix CVE-2024-45772?

Update org.apache.lucene:lucene-replicator to 9.12.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-45772 is resolved across your whole dependency graph.

How do I detect CVE-2024-45772 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.lucene:lucene-replicator, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2024-45772 if there is no patch (or I can't update yet)?

Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.

Is CVE-2024-45772 actively exploited in the wild?

No public exploit code has been indexed for CVE-2024-45772 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2024-45772?

CVE-2024-45772 has an EPSS (Exploit Prediction Scoring System) score of 0.6%, placing it in the 48th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2024-45772?

CVE-2024-45772 is classified as Deserialization of Untrusted Data (CWE-502). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2024-45772 published, and has it been updated?

CVE-2024-45772 was published on September 30, 2024 and was last updated on December 12, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

MEDIUM severity

CVE-2024-45772 — lucene-replicator

MEDIUM

CVE-2024-45772 is a medium-severity (CVSS 5.1) Deserialization of Untrusted Data vulnerability in org.apache.lucene:lucene-replicator. A fix is available for org.apache.lucene:lucene-replicator — see the affected versions and patch details below.

Deserialization of Untrusted Data vulnerability in Apache Lucene Replicator.

Published

Sep 30, 2024

Updated

Dec 12, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 3, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2024-45772.

EPSS Exploitation Probability

via FIRST.org ↗

0.6%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs48th percentile — riskier than 48% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

☕org.apache.lucene:lucene-replicator

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Deserialization of Untrusted Data vulnerability in Apache Lucene Replicator.

Users are recommended to upgrade to version 9.12.0, which fixes the issue.

The deserialization can only be triggered if users actively deploy an network-accessible implementation and a corresponding client using a HTTP library that uses the API (e.g., a custom servlet and HTTPClient). Java serialization filters (such as -Djdk.serialFilter='!*' on the commandline) can mitigate the issue on vulnerable versions without impacting functionality.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.apache.lucene:lucene-replicator`	≥ 4.4.0&&< 9.12.0	9.12.0`org.apache.lucene:lucene-replicator:9.12.0`

Affected Products

1 product · 1 configurations

Application

lucene replicatorapache

≥ 4.4.0 && < 9.12.0

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.lucene:lucene-replicator, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.lucene:lucene-replicator to 9.12.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-45772 is resolved across your whole dependency graph.
Workarounds
Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.

Frequently Asked Questions

This issue affects Apache Lucene's replicator module: from 4.4.0 before 9.12.0. The deprecated org.apache.lucene.replicator.http package is affected. The org.apache.lucene.replicator.nrt package is not affected. Users are recommended to upgrade to version 9.12.0, which fixes the issue. The deserialization can only be triggered if users actively deploy an network-accessible implementation and a corresponding client using a HTTP library that uses the API (e.g., a custom servlet and HTTPClient). Java serialization filters (such as -Djdk.serialFilter='!*' on the commandline) can mitigate the iss

O3 Security · Impact-Aware SCA

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CVSS Score

5.1/10CVSS v3 base

Vector breakdown

Attack Vector

Adjacent

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Raw vector

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

CWE Classification

CWE-502Deserialization of Untrusted Data

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

Sep 30, 2024

Last updated

Dec 12, 2024

Identifiers

CVE-2024-45772

References

Advisorynvd.nist.gov · CVE 2024 45772 Weblists.apache.org · 3f3oph7bqnqspb9q5p0gm5mgc1b6thjo Webopenwall.com Packagegitbox.apache.org · asf

Related vulnerabilities

This CVE is medium severity; 8 of 8 other CVEs with CWE-502 are rated as high or higher (top: critical).

CVE-2026-115878CVE-2026-62848CVE-2026-115912CVE-2026-116580CVE-2026-114608CVE-2026-102554GHSA-673q-mjm6-r5xrCVE-2026-70035Browse all CWE-502

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedDec 12, 2024