What is CVE-2022-42003?

CVE-2022-42003 is a high-severity vulnerability in Fasterxml Jackson-Databind, classified under Deserialization of Untrusted Data. CVSS score: 7.5/10. Published 2022-10-02.

How severe is CVE-2022-42003?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2022-42003 known to be exploited?

28 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Fasterxml Jackson-Databind

CVE-2022-42003

In FasterXML jackson-databind before versions 2.13.4.1 and 2.12.17.1, resource exhaustion can occur because of a lack of a check in primitive value deserializers to avoid deep wrapper array nesting, when the UNWRAP_SINGLE_VALUE_ARRAYS feature is enabled.

Vulnerability class: Insecure Deserialization

Published 2022-10-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.028 (85.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

References

github.com/FasterXML/jackson-databind/issues/3590 (Exploit, Third Party Advisory, Issue Tracking)
github.com/FasterXML/jackson-databind/commit/d78d00ee7b5245b93103fef3187f70543d… (Patch, Third Party Advisory)
bugs.chromium.org/p/oss-fuzz/issues/detail (Exploit, Patch, Mailing List, Third Party Advisory, Issue Tracking)
security.gentoo.org/glsa/202210-21 (vendor-advisory, Third Party Advisory)
www.debian.org/security/2022/dsa-5283 (vendor-advisory, Third Party Advisory)
security.netapp.com/advisory/ntap-20221124-0004/ (Third Party Advisory)
lists.debian.org/debian-lts-announce/2022/11/msg00035.html (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2022-42003?: CVE-2022-42003 is a high-severity vulnerability in Fasterxml Jackson-Databind, classified under Deserialization of Untrusted Data. CVSS score: 7.5/10. Published 2022-10-02.
How severe is CVE-2022-42003?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2022-42003 known to be exploited?: 28 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.