XStream serializes Java objects to XML and back again. Versions prior to 1.4.20 may allow a remote attacker to terminate the application with a stack overflow error, resulting in a denial of service only via manipulation the processed input stream. The attack uses the hash code implementation for collections and maps to force recursive hash calculation causing a stack overflow. This issue is patched in version 1.4.20 which handles the stack overflow and raises an InputManipulationException instead. A potential workaround for users who only use HashMap or HashSet and whose XML refers these only as default map or set, is to change the default implementation of java.util.Map and java.util per the code example in the referenced advisory. However, this implies that your application does not care about the implementation of the map and all elements are comparable.
CVE-2022-41966
“—” beside the score: it is equal to NVD's CVSS score.
This high-severity CVE scores 8.2 under NVD CVSS v3. EPSS exploit probability: 9.0% (95th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
- Public exploit or proof-of-concept code is available
A fix is available — apply it.
- CVSS v3
- 8.2
- EG Score
- 8.2HIGHmedium confidence
- EG Risk
- 68EG Risk 68/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity82% × 45%Impact severity (EG Severity): CVSS 8.2 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 9.0%
- EPSS %ILE
- 95th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (8.2): severity, escalated by confirmed exploitation. This CVE's 8.2 is its impact severity (EG Severity), not escalated.
- EG Severity
- 8.2 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
- EG Likelihood
- 9.0% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-20). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
December 28, 2022
Last Modified
May 23, 2025
Advisory Details (3)
Auto-updated Sep 8, 2026XStream can cause a Denial of Service by injecting recursive collections or maps based on element's hash values raising a stack overflow · Advisory · x-stream/xstream · GitHub
https://github.com/x-stream/xstream/security/advisories/GHSA-j563-grx4-pjpvVendor Advisories for CVE-2022-41966(9)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2024:1353Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Process Automation Manager 7.13.5 security update
- RHSA-2023:3954Red Hat Product SecurityCritical
Red Hat Security Advisory: Red Hat Fuse 7.12 release and security update
- RHSA-2023:3625Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.10.62 security update
- RHSA-2023:3663Red Hat Product SecurityHigh
Red Hat Security Advisory: jenkins and jenkins-2-plugins security update
- RHSA-2023:2100Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Integration Camel for Spring Boot 3.20.1 security update
- RHSA-2023:2041Red Hat Product SecurityHigh
Red Hat Security Advisory: Migration Toolkit for Applications security and bug fix update
- RHSA-2023:1286Red Hat Product SecurityHigh
Red Hat Security Advisory: Migration Toolkit for Runtimes security bug fix and enhancement update
- RHSA-2023:1177Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Integration Camel Extension For Quarkus 2.7-1 security update
- +1 more
Patch Availability(8)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | libxstream-java (1.4.8-1ubuntu0.1+esm1) @ xenial | 2026-10-21 | ubuntu |
| redhat | xstream | 2024-03-18 | redhat |
| redhat | jenkins-0:2.401.1.1685677065-1.el8 | 2023-06-23 | redhat |
| redhat | jenkins-0:2.401.1.1686831596-3.el8 | 2023-06-19 | redhat |
| redhat | mta/mta-windup-addon-rhel8:6.1.0-11 | 2023-04-27 | redhat |
| redhat | mtr/mtr-web-container-rhel8:1.0-22 | 2023-03-16 | redhat |
| redhat | patch | 2023-03-09 | redhat |
| redhat | patch | 2023-03-08 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(6 across 6 ecosystems)
Debian:10(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| libxstream-java | 1.4.11.1-1, 1.4.11.1-1+deb10u1, 1.4.11.1-1+deb10u2, 1.4.11.1-1+deb10u3 |
| — |
Debian:11(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| libxstream-java | 1.4.15-3, 1.4.15-3+deb11u1 |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| libxstream-java | — |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| libxstream-java | — |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| libxstream-java | — |
| — |
Maven(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| com.thoughtworks.xstream:xstream | 0.1 ... 1.4.9 (44 versions) |
| — |
Weakness Classification(4)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(1)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 10× in last 7d / 37× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 93 of 190 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 7 repeat rows among the latest 100 are merged into the row they repeat. The 97 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-23 16:28 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-22 16:30 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-21 16:29 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-21 06:13 UTCEG score recompute
- 2026-10-21 06:13 UTCVendor advisory
- 2026-10-20 16:29 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-19 16:28 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-18 16:28 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-18 08:26 UTCEG score recompute
- 2026-10-17 16:29 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-16 16:35 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-15 16:28 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-15 05:24 UTCOSV refresh
- 2026-10-14 16:29 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-13 16:29 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-12 18:47 UTCEG score recompute
- 2026-10-12 16:30 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-11 22:10 UTCEG score recompute
- 2026-10-11 13:44 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-10 19:57 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-09 20:04 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-08 17:05 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-07 23:45 UTCEPSS rescoreEPSS 9.0% · 95th percentile
- 2026-10-06 15:14 UTCEPSS rescoreEPSS 8.8% · 95th percentile
- 2026-10-05 17:40 UTCEPSS rescoreEPSS 8.8% · 95th percentile
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- 2026-10-04 23:19 UTCEPSS rescoreEPSS 8.8% · 95th percentile
- 2026-10-03 14:23 UTCEPSS rescoreEPSS 8.8% · 95th percentile
- 2026-10-02 16:23 UTCEPSS rescoreEPSS 8.8% · 95th percentile
- 2026-10-01 19:47 UTCEPSS rescoreEPSS 8.8% · 95th percentile
- 2026-09-30 16:06 UTCEG score recompute
- 2026-09-30 15:01 UTCEPSS rescoreEPSS 8.8% · 95th percentile
- 2026-09-29 15:16 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-28 13:48 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-27 13:42 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-26 15:55 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-26 00:22 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-24 02:06 UTCOSV refresh
- 2026-09-23 13:45 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-20 20:13 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-19 15:38 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-16 14:05 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-16 05:10 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-15 03:07 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-12 14:57 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-11 14:50 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-11 09:33 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-08 21:57 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-07 15:58 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-06 13:45 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-05 15:25 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-04 19:54 UTCOSV refresh
- 2026-09-04 13:57 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-04 05:04 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-02 14:09 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-09-01 13:51 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-08-30 19:14 UTCEPSS rescoreEPSS 8.8% · 94th percentile
- 2026-08-30 01:19 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-28 21:38 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-27 14:22 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-26 14:43 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-25 13:46 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-24 14:13 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-23 00:17 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-21 23:46 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-20 22:53 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-19 17:01 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-18 13:45 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-18 07:04 UTCOSV refresh
- 2026-08-17 13:44 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-16 14:53 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-16 02:12 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-15 01:27 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-13 21:58 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-12 13:48 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-11 13:39 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-09 13:44 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-08 16:34 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-07 16:24 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-06 13:44 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-05 19:15 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-04 15:07 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-04 10:35 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-03 10:33 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-03 02:27 UTCOSV refresh
- 2026-08-02 02:24 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-08-01 04:13 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-07-30 16:25 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-07-30 01:28 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-07-25 14:15 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-07-24 14:15 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-07-23 14:16 UTCEPSS rescoreEPSS 8.7% · 94th percentile
- 2026-07-23 02:14 UTCEG score recompute
- 2026-07-22 23:01 UTCEG score recompute
Publicly available exploits
(1 reference)Public exploit code is referenced for this CVE (1 GitHub PoC). Defenders should treat patch urgency accordingly.
- Open source ↗GitHub PoC111ddea/Xstream_cve-2022-41966Published Jan 6, 2023
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:10:libxstream-java
- CVE-2021-39144NVD 8.5EG 9.0 KEVEPSS p100CRITICAL
- CVE-2020-26217NVD 8.8EG 9.0EPSS p100CRITICAL
- CVE-2020-26259NVD 6.8EG 8.9EPSS p100HIGH
- CVE-2020-26258NVD 7.7EG 8.9EPSS p100HIGH
- CVE-2021-39139EG 8.8EPSS p92HIGH
- CVE-2021-39152EG 8.5EPSS p96HIGH
- CVE-2021-39150EG 8.5HIGH
- CVE-2021-39154EG 8.5EPSS p92HIGH
- CVE-2021-39153EG 8.5EPSS p91HIGH
- CVE-2021-39151EG 8.5EPSS p92HIGH
Same vendor
10 shownredhat:RHSA-2023:2100 · redhat:RHSA-2023:1286 · redhat:RHSA-2023:1006
Same CWE
10 shownCWE-502 · CWE-120 · CWE-121
Frequently asked(5)
What is CVE-2022-41966?
When was the CVE record for CVE-2022-41966 published?
Is CVE-2022-41966 actively exploited?
What is the CVSS score of CVE-2022-41966?
How do I remediate CVE-2022-41966?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-41966
Is Your Infrastructure Affected by CVE-2022-41966?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.