CVE-2022-31115: amazon opensearch Deserialization of Untrusted Data
Vulnerability summary
CVE-2022-31115 is a high (CVSS 8.8) Deserialization of Untrusted Data vulnerability in amazon opensearch. EPSS estimates a 1.62% chance of exploitation in the next 30 days, higher than 75.6% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 30-06-2022PublishedVulnerability first disclosed.
- 22-04-2025Last modifiedVulnerability information updated.
Description
opensearch-ruby is a community-driven, open source fork of elasticsearch-ruby. In versions prior to 2.0.1 the ruby `YAML.load` function was used instead of `YAML.safe_load`. As a result opensearch-ruby 2.0.0 and prior can lead to unsafe deserialization using YAML.load if the response is of type YAML. An attacker must be in control of an opensearch server and convince the victim to connect to it in order to exploit this vulnerability. The problem has been patched in opensearch-ruby gem version 2.0.1. Users are advised to upgrade. There are no known workarounds for this issue.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · RubygemsEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.62%
Chance of exploitation in the next 30 days
Percentile
76%
Versus all other CVEs
30-day change
0.00 pp
From 1.62% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (staaldraad.github.io)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Amazon1 product
- opensearch< 2.0.2
Opensearch-project1 product
- opensearch-ruby< 2.0.1
RubyGems1 product
- opensearch-ruby≥ 2.0.0, < 2.0.2
3 vendors · 3 products
References
9 links- github.com/opensearch-project/opensearch-ruby/security/advisories/GHSA-977c-63xq-cgw3X Refsource CONFIRMWEBThird Party Advisory
- staaldraad.github.io/post/2021-01-09-universal-rce-ruby-yaml-load-updated/X Refsource MISCExploitThird Party Advisory
