How severe is GHSA-3x8x-79m2-3w2w?

GHSA-3x8x-79m2-3w2w has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by GHSA-3x8x-79m2-3w2w?

GHSA-3x8x-79m2-3w2w affects the following packages: com.fasterxml.jackson.core:jackson-databind (Maven), com.fasterxml.jackson.core:jackson-databind (Maven). Ecosystems affected: Maven.

How do I fix GHSA-3x8x-79m2-3w2w?

Update com.fasterxml.jackson.core:jackson-databind to 2.12.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-3x8x-79m2-3w2w is resolved across your whole dependency graph.

How do I detect GHSA-3x8x-79m2-3w2w in my Maven dependencies?

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

How do I mitigate GHSA-3x8x-79m2-3w2w if there is no patch (or I can't update yet)?

Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Is GHSA-3x8x-79m2-3w2w actively exploited in the wild?

Yes. There are 1 known exploit references for GHSA-3x8x-79m2-3w2w, including 1 in-the-wild exploitation observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for GHSA-3x8x-79m2-3w2w?

GHSA-3x8x-79m2-3w2w has an EPSS (Exploit Prediction Scoring System) score of 1.1%, placing it in the 67th 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 GHSA-3x8x-79m2-3w2w?

GHSA-3x8x-79m2-3w2w is classified as CWE-770 (CWE-770). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-3x8x-79m2-3w2w published, and has it been updated?

GHSA-3x8x-79m2-3w2w was published on March 19, 2023 and was last updated on September 10, 2026. 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

HIGH severity

jackson-databind possible Denial of Service if using JDK serialization to serialize JsonNodeGHSA-3x8x-79m2-3w2w

HIGHFix: FasterXML/jackson-databind@3ccde7d

GHSA-3x8x-79m2-3w2w is a high-severity (CVSS 7.5) CWE-770 vulnerability in com.fasterxml.jackson.core:jackson-databind. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for com.fasterxml.jackson.core:jackson-databind — see the affected versions and patch details below.

Also known asCVE-2021-46877

Published

Mar 19, 2023

Updated

Sep 10, 2026

Affected

2 pkgs

Patched

2 / 2

Exploits

1 known

Exploitation data as of Nov 11, 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 GHSA-3x8x-79m2-3w2w.

EPSS Exploitation Probability

via FIRST.org ↗

1.1%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs67th percentile — riskier than 67% 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

2 pkgs affected

☕com.fasterxml.jackson.core:jackson-databind☕com.fasterxml.jackson.core:jackson-databind

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

jackson-databind 2.10.x through 2.12.x before 2.12.6 and 2.13.x before 2.13.1 allows attackers to cause a denial of service (2 GB transient heap usage per read) in uncommon situations involving JsonNode JDK serialization.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`com.fasterxml.jackson.core:jackson-databind`	≥ 2.10.0&&< 2.12.6	2.12.6`com.fasterxml.jackson.core:jackson-databind:2.12.6`
☕Maven	`com.fasterxml.jackson.core:jackson-databind`	≥ 2.13.0&&< 2.13.1	2.13.1`com.fasterxml.jackson.core:jackson-databind:2.13.1`

Affected Products

1 product · 4 configurations

Application

jackson-databindfasterxml

≥ 2.10.0 && < 2.12.6

1 version

2.13.0

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

jackson-databind 2.10.x through 2.12.x before 2.12.6 and 2.13.x before 2…

github.comNVDMar 2023

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.fasterxml.jackson.core:jackson-databind, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update com.fasterxml.jackson.core:jackson-databind to 2.12.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-3x8x-79m2-3w2w is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatModerate

Product	Fixed in	Advisory
Migration Toolkit for Runtimes 1 on RHEL 8	`mtr/mtr-web-container-rhel8:1.1-7`	RHSA-2023:3373
MTA-6.2-RHEL-9	`mta/mta-windup-addon-rhel9:6.2.0-11`	RHSA-2023:4627
OCP-Tools-4.12-RHEL-8	`jenkins-0:2.401.1.1686649641-3.el8`	RHSA-2023:3610
OCP-Tools-4.13-RHEL-8	`jenkins-0:2.387.3.1684911776-3.el8`	RHSA-2023:3299
Red Hat AMQ Streams 2.4.0	see advisory	RHSA-2023:3223
Red Hat JBoss Enterprise Application Platform	`com.fasterxml.jackson.core/jackson-databind:2.12.7.redhat-00003`	RHSA-2023:4509
Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 8	`eap7-wildfly-0:7.4.12-3.GA_redhat_00003.1.el8eap`	RHSA-2023:4506
Red Hat JBoss Enterprise Application Platform 7.4 for RHEL 9	`eap7-wildfly-0:7.4.12-3.GA_redhat_00003.1.el9eap`	RHSA-2023:4507

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is GHSA-3x8x-79m2-3w2w in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

7.5/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Raw vector

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

CWE Classification

CWE-770CWE-770

Weaponization

No Nuclei template or Metasploit module yet. 1 public proof-of-concept reference is listed on this page.

OpenSSF Scorecard

Package health score

jackson-databind

7.8/10

Maintained10/10

Code-Review0/10

Branch-Protection3/10

Assessed Nov 9, 2026

Timeline

Disclosed

Mar 19, 2023

First exploit

Mar 23, 2023

5 days after disclosure — rapid exploitation

Last updated

Sep 10, 2026

Identifiers

GHSA-3x8x-79m2-3w2w

References

Advisorynvd.nist.gov · CVE 2021 46877 Webgithub.com Webgithub.com · 3ccde7d938fea547e598fdefe9a82cff37fed5cb Webgithub.com · Jackson Release 2.12.6 Webgithub.com · Jackson Release 2.13.1 Webgroups.google.com · OsBsirPM Vw Packagegithub.com · jackson databind

Related vulnerabilities

This CVE is high severity; 3 of 8 other CVEs affecting jackson-databind are rated as high or higher (top: high).

CVE-2026-91777CVE-2026-91776CVE-2026-83557CVE-2026-68497CVE-2026-77310CVE-2026-19032CVE-2026-59888CVE-2026-59889

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedSep 10, 2026

jackson-databind possible Denial of Service if using JDK serialization to serialize JsonNodeGHSA-3x8x-79m2-3w2w

Exploitation Status

No confirmed exploitation observed yet

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Fixing This On Your OS

Frequently Asked Questions

Is GHSA-3x8x-79m2-3w2w in your dependencies?