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01 Record

CVE-2017-18640

The Alias feature in SnakeYAML before 1.26 allows entity expansion during a load operation, a related issue to CVE-2003-1564.

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

The Alias feature in SnakeYAML before 1.26 allows entity expansion during a load operation, a related issue to CVE-2003-1564.

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
26.72% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 97.8% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2019-12-12 00:00Z6 YR AGO
Last updated
2024-08-05 21:28Z2 YR AGO
Reserved
2019-12-12
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-776Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')Base
Data version
5.1
Document digest
0c75117f0c44d6580097e4e593717ad91d239ab1d632f8e4d7cc3dee1c381cc4

05 Affected products

VendorProductVersionsPlatforms
fedoraprojectfedoraNot specified—
oraclepeoplesoft_enterprise_pt_peopletoolsNot specified—
quarkusquarkusNot specified—
redhatamq_onlineNot specified—
redhatamq_streamsNot specified—
redhatenterprise_linuxNot specified—
redhatjboss_fuseNot specified—
redhatopenshift_application_runtimesNot specified—
redhatred_hat_single_sign_onNot specified—
redhatrhel_software_collectionsNot specified—
snakeyaml_projectsnakeyamlNot specified—

06 References

07 Fixed in

AlmaLinux 8

  • prometheus-jmx-exporter
    Fixed in 0.12.0-6.el8

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • prometheus-jmx-exporter
    Fixed in 0.12.0-6.el8

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • snakeyaml
    Fixed in 1.25+ds-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • snakeyaml
    Fixed in 1.25+ds-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • snakeyaml
    Fixed in 1.25+ds-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • snakeyaml
    Fixed in 1.12-2ubuntu0.14.04.1~esm2
    Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • snakeyaml
    Fixed in 1.12-2ubuntu0.16.04.1~esm2
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • snakeyaml
    Fixed in 1.23-1+deb10u1ubuntu0.1~esm1
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • snakeyaml
    Fixed in 1.25+ds-2ubuntu0.1+esm1
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.