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Fencer Vulns
high 7.3

CVE-2025-33042 json

Apache Avro Java SDK: Code injection on Java generated code

published 2026-02-13 8 mo ago modified 2026-09-10 1 mo ago also EUVD-2025-206910 , GHSA-rp46-r563-jrc7 , JLSEC-2026-1375 , PYSEC-2026-26

cvss
7.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

Improper Control of Generation of Code ('Code Injection') vulnerability in Apache Avro Java SDK when generating specific records from untrusted Avro schemas.

This issue affects Apache Avro Java SDK: all versions through 1.11.4 and version 1.12.0.

Users are recommended to upgrade to version 1.12.1 or 1.11.5, which fix the issue.

Patch / fix

  • maven org.apache.avro:avro-compiler 1.11.5, 1.12.1
  • pypi avro 1.11.5
  • org.apache.avro avro 1.11.5, 1.12.1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-33042 updated cvss 5.6

org.apache.avro/avro: Apache Avro Java SDK: Code injection on Java generated code

  • Red Hat build of Apache Camel 4 for Quarkus 3 avro Red Hat build of Apache Camel for Spring Boot 4 avro Red Hat build of Apicurio Registry 2 avro Red Hat build of Apicurio Registry 3 avro Red Hat build of Debezium 2 avro Red Hat build of Debezium 3 avro
    +8 more products
    Red Hat Data Grid 8 avro Red Hat Fuse 7 avro Red Hat JBoss Enterprise Application Platform 7 avro Red Hat JBoss Enterprise Application Platform 8 avro Red Hat JBoss Enterprise Application Platform Expansion Pack avro Red Hat Single Sign-On 7 avro Red Hat streams for Apache Kafka 2 avro Red Hat streams for Apache Kafka 3 avro
    affected: workaround, no fix available “Fix deferred”
  • Red Hat build of Quarkus 3.20.6.redhat avro 1.12.1.redhat-00002
    fixed: vendor fix RHSA-2026:7109
  • Red Hat build of Quarkus 3.27.3.redhat avro 1.12.1.redhat-00002
    fixed: vendor fix RHSA-2026:7380
  • Red Hat build of Quarkus 3.20.6.redhat jna 5.8.0, lit 3.2.1, bson 5.3.1, db2 1.20.6, h2 2.3.230, y18n 5.0.8, +1015 more Red Hat build of Quarkus 3.27.3.redhat jna 5.8.0, db2 1.21.4, h2 2.3.230, y18n 5.0.8, cliui 8.0.1, guice 5.1.0, +1005 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
8 mo ago

Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CNA 3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
OSV 3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected packages

ecosystem package affected fixed in
maven org.apache.avro:avro-compiler
>=1.12.0, <1.12.1
<1.11.5
1.12.1
1.11.5
julia Avro_jll
all versions
 no fix listed
pypi avro
<1.11.5
1.11.5

Affected products

  • Apache Software Foundation Apache Avro Java SDK

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.