SnakeYaml's Constructor() class does not restrict types which can be instantiated during deserialization. Deserializing yaml content provided by an attacker can lead to remote code execution. We recommend using SnakeYaml's SafeConsturctor when parsing untrusted content to restrict deserialization. We recommend upgrading to version 2.0 and beyond.
CVE-2022-1471
“▲” beside the score: it is higher than NVD's CVSS score.
Score elevated to 9.0 because EPSS predicted 99.5% probability of exploitation within the next 30 days (99th percentile of EPSS-scored CVEs) when EchelonGraph scored this CVE. NVD baseline CVSS 8.3 retained for reference. Confidence: see factors.
Also known asEUVD-2022-7690 (ENISA EUVD) · GHSA-mjmj-j48q-9wg2 (GitHub Security Advisories)Source: ENISA EUVD
- High exploitation likelihood — EPSS 99.5%
- Public exploit code is available (Metasploit, other public proof-of-concept code)
A fix is available — apply it.
- CVSS v3
- 8.3
- EG Score
- 9.0CRITICALhigh confidence
- EG Risk
- 77EG Risk 77/100
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)Severity83% × 45%Impact severity (EG Severity): CVSS 8.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation99.5% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
- 99.5%
- EPSS %ILE
- 99th
- 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 (9.0): severity, escalated by confirmed exploitation. This CVE's 9.0 is EPSS's lift toward 9.0 from its impact severity (EG Severity, CVSS 8.3 HIGH): a likelihood of exploitation, not impact.
- EG Severity
- 8.3 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 99.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.
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 no (CISA Vulnrichment) · Technical impact total (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; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (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 1, 2022
Last Modified
June 18, 2025
Advisory Details (8)
Auto-updated Sep 6, 2026SnakeYaml: Constructor Deserialization Remote Code Execution · Advisory · google/security-research · GitHub
https://github.com/google/security-research/security/advisories/GHSA-mjmj-j48q-9wg2CVE-2022-1471 - SnakeYAML library RCE Vulnerability impacts Multiple Products | Atlassian Support | Atlassian Documentation
https://confluence.atlassian.com/security/cve-2022-1471-snakeyaml-library-rce-vulnerability-in-multiple-products-1296171009.htmloss-security - CVE-2023-46302: Apache Submarine: Fix CVE-2022-1471 SnakeYaml unsafe deserialization
http://www.openwall.com/lists/oss-security/2023/11/19/1Locked Out | Packet Storm
http://packetstormsecurity.com/files/175095/PyTorch-Model-Server-Registration-Deserialization-Remote-Code-Execution.htmlVendor Advisories for CVE-2022-1471(20)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2025:1747Red Hat Product SecurityCritical
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.3.12 security update
- RHSA-2025:1746Red Hat Product SecurityCritical
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.1.9 on RHEL 7 security update
- RHSA-2024:1353Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Process Automation Manager 7.13.5 security update
- RHSA-2024:0775Red Hat Product SecurityHigh
Red Hat Security Advisory: jenkins and jenkins-2-plugins security update
- RHSA-2024:0325Red Hat Product SecurityHigh
Red Hat Security Advisory: Updated RHEL-7-based Middleware container images
- RHSA-2023:7697Red Hat Product SecurityMedium
Red Hat Security Advisory: AMQ Clients 2023.Q4
- RHSA-2023:6171Red Hat Product SecurityCritical
Red Hat Security Advisory: Red Hat Product OCP Tools 4.11 Openshift Jenkins security update
- RHSA-2023:5165Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat AMQ Streams 2.5.0 release and security update
- +12 more
Patch Availability(24)
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
(5 across 5 ecosystems)
Debian:11(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| snakeyaml | 1.28-1 ... 2.5+ds-1~exp0 (12 versions) |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| snakeyaml | 1.33-2 ... 2.5+ds-1~exp0 (6 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| snakeyaml | 2.0+ds+really1.33-1, 2.4+ds-1~exp0, 2.5+ds-1, 2.5+ds-1~exp0 |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| snakeyaml | 2.0+ds+really1.33-1, 2.4+ds-1~exp0, 2.5+ds-1, 2.5+ds-1~exp0 |
| — |
Maven(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| org.yaml:snakeyaml | 1.10 ... 1.9 (30 versions) |
| — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(8)
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.
- Red HatRHBA-2023:0030IMPORTANT2022-10-13
RHBA-2023:0030 — Important
- Red HatRHEA-2023:3224IMPORTANT2022-10-13
RHEA-2023:3224 — Important
- Red HatRHSA-2022:9032IMPORTANT2022-10-13
RHSA-2022:9032 — Important
- Red HatRHSA-2022:9058IMPORTANT2022-10-13
RHSA-2022:9058 — Important
- Red HatRHSA-2023:0697IMPORTANT2022-10-13
RHSA-2023:0697 — Important
- Red HatRHSA-2023:0758IMPORTANT2022-10-13
RHSA-2023:0758 — Important
- Red HatRHSA-2023:0777IMPORTANT2022-10-13
RHSA-2023:0777 — Important
- Red HatRHSA-2023:1044IMPORTANT2022-10-13
RHSA-2023:1044 — Important
Data Freshness Timeline
(refreshed 15× in last 7d / 46× 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.
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 81 are merged into the row they repeat.
- 2026-11-01 12:03 UTCVendor advisory
- 2026-11-01 12:03 UTCGHSA enrichmentGHSA-mjmj-j48q-9wg2 · GitHub severity HIGH · GitHub CVSS 8.3
- 2026-11-01 08:29 UTCGHSA enrichmentGHSA-mjmj-j48q-9wg2 · GitHub severity HIGH · GitHub CVSS 8.3
- 2026-11-01 08:29 UTCEG score recompute
- 2026-10-31 16:29 UTCEPSS rescoreEPSS 99.5% · 99th percentile
- 2026-10-31 11:41 UTCEG score recompute
- 2026-10-31 11:41 UTCVendor advisory
- 2026-10-30 11:20 UTCEG score recompute
- 2026-10-30 11:20 UTCVendor advisory
- 2026-10-29 10:59 UTCEG score recompute
- 2026-10-29 10:59 UTCVendor advisory
- 2026-10-28 10:25 UTCEG score recompute
- 2026-10-28 10:25 UTCVendor advisory
- 2026-10-27 09:10 UTCEG score recompute
- 2026-10-27 09:10 UTCVendor advisory
- 2026-10-26 07:59 UTCVendor advisory
- 2026-10-25 18:16 UTCEG score recompute
- 2026-10-25 16:29 UTCEPSS rescoreEPSS 99.5% · 99th percentile
- 2026-10-25 07:36 UTCEG score recompute
- 2026-10-25 07:36 UTCVendor advisory
- 2026-10-24 07:15 UTCEG score recompute
- 2026-10-24 07:15 UTCVendor advisory
- 2026-10-23 06:53 UTCEG score recompute
- 2026-10-23 06:53 UTCVendor advisory
- 2026-10-22 06:32 UTCEG score recompute
Show 49 moreShow fewer
- 2026-10-22 06:32 UTCVendor advisory
- 2026-10-21 06:06 UTCEG score recompute
- 2026-10-21 06:06 UTCVendor advisory
- 2026-10-20 05:43 UTCEG score recompute
- 2026-10-20 05:43 UTCVendor advisory
- 2026-10-19 05:20 UTCEG score recompute
- 2026-10-19 05:20 UTCVendor advisory
- 2026-10-18 04:58 UTCEG score recompute
- 2026-10-18 04:58 UTCVendor advisory
- 2026-10-17 04:34 UTCEG score recompute
- 2026-10-17 04:34 UTCVendor advisory
- 2026-10-16 04:12 UTCEG score recompute
- 2026-10-16 04:12 UTCVendor advisory
- 2026-10-15 01:24 UTCEG score recompute
- 2026-10-15 01:24 UTCVendor advisory
- 2026-10-14 16:29 UTCEPSS rescoreEPSS 99.6% · 99th percentile
- 2026-10-13 22:18 UTCEG score recompute
- 2026-10-13 22:18 UTCVendor advisory
- 2026-10-12 19:04 UTCVendor advisory
- 2026-10-12 19:03 UTCEG score recompute
- 2026-10-11 23:29 UTCEG score recompute
- 2026-10-02 16:23 UTCEPSS rescoreEPSS 99.6% · 99th percentile
- 2026-09-30 15:47 UTCEG score recompute
- 2026-09-24 14:00 UTCEPSS rescoreEPSS 99.6% · 99th percentile
- 2026-09-24 05:15 UTCOSV refresh
- 2026-09-16 14:05 UTCEPSS rescoreEPSS 99.6% · 99th percentile
- 2026-09-05 15:25 UTCEPSS rescoreEPSS 99.6% · 99th percentile
- 2026-09-04 22:24 UTCOSV refresh
- 2026-08-30 19:14 UTCEPSS rescoreEPSS 99.6% · 99th percentile
- 2026-08-30 01:19 UTCEPSS rescoreEPSS 99.6% · 99th percentile
- 2026-08-24 14:13 UTCEPSS rescoreEPSS 99.6% · 99th percentile
- 2026-08-18 09:34 UTCOSV refresh
- 2026-08-12 13:48 UTCEPSS rescoreEPSS 99.6% · 99th percentile
- 2026-08-03 04:57 UTCOSV refresh
- 2026-07-24 14:15 UTCEPSS rescoreEPSS 99.6% · 99th percentile
- 2026-07-23 02:07 UTCEG score recompute
- 2026-07-22 22:53 UTCEG score recompute
- 2026-07-16 14:19 UTCOSV refresh
- 2026-07-09 19:07 UTCEPSS rescoreEPSS 99.6% · 99th percentile
- 2026-06-28 12:49 UTCOSV refresh
- 2026-06-15 17:46 UTCEPSS rescoreEPSS 99.6% · 99th percentile
- 2026-06-10 23:09 UTCOSV refresh
- 2026-06-05 06:09 UTCEPSS rescoreEPSS 94% · 99th percentile
- 2026-05-31 22:29 UTCEPSS rescoreEPSS 94% · 99th percentile
- 2026-05-29 13:42 UTCEPSS rescoreEPSS 94% · 99th percentile
- 2026-05-27 13:39 UTCEPSS rescoreEPSS 94% · 99th percentile
- 2026-05-26 07:17 UTCEPSS rescoreEPSS 94% · 99th percentile
- 2026-05-25 11:22 UTCEG score recompute
- 2026-05-25 11:22 UTCVendor advisory
Publicly available exploits
(3 references)Public exploit code is referenced for this CVE (1 Metasploit module, 2 GitHub PoCs). Defenders should treat patch urgency accordingly.
- Metasploitexploit/multi/http/torchserver_cve_2023_43654✓ verifiedPublished Oct 12, 2023
PyTorch Model Server Registration and Deserialization RCE
Open source ↗ - GitHub PoCfalconkei/snakeyaml_cve_pocPublished May 8, 2023
SnakeYAML-CVE-2022-1471-POC
Open source ↗ - GitHub PoC1fabunicorn/SnakeYAML-CVE-2022-1471-POCPublished Mar 2, 2023
Code for veracode blog
Open source ↗
Related CVEs(same product + same vendor + same CWE)
Same product
7 shownDebian:11:snakeyaml
Same vendor
10 shownredhat:RHSA-2023:0758 · redhat:RHSA-2022:9032 · redhat:RHSA-2023:0777
Same CWE
10 shownCWE-502 · CWE-20
Frequently asked(5)
What is CVE-2022-1471?
When was the CVE record for CVE-2022-1471 published?
Is CVE-2022-1471 actively exploited?
What is the CVSS score of CVE-2022-1471?
How do I remediate CVE-2022-1471?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-1471
Is Your Infrastructure Affected by CVE-2022-1471?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.