CVE-2020-1947

highpriority · attend · 61EPSS 0.339 · 98 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

4 exploits · PoC

Likely / severe?

33.9% (98th) EPSS

CVSS 7.5 · high

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

In Apache ShardingSphere(incubator) 4.0.0-RC3 and 4.0.0, the ShardingSphere's web console uses the SnakeYAML library for parsing YAML inputs to load datasource configuration. SnakeYAML allows to unmarshal data to a Java type By using the YAML tag. Unmarshalling untrusted data can lead to security flaws of RCE.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.19.3criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USprimaryCWE-502US

exploits (4)

Public proof-of-concept and weaponised exploit code.

StarkChristmas/CVE-2020-1947StarkChristmas/CVE-2020-1947PoC · poc_in_github
jas502n/CVE-2020-1947Apache ShardingSphere UI YAML解析远程代码执行漏洞PoC · poc_in_github
shadowsock5/ShardingSphere_CVE-2020-1947shadowsock5/ShardingSphere_CVE-2020-1947PoC · poc_in_github
wsfengfan/CVE-2020-1947CVE-2020-1947 Python POCPoC · poc_in_github

affected products (4)

Products and version ranges known to be affected.

Apache Software Foundation Apache ShardingSphere(incubator)≤ 4.0.0-RC3enisa_euvdEU
Apache Software Foundation Apache ShardingSphere(incubator)≤ 4.0.0enisa_euvdEU
apache shardingsphere= 4.0.0nvdUScpe:2.3:a:apache:shardingsphere:*:*:*:*:*:*:*:*
Maven org.apache.shardingsphere:shardingsphere4.0.0-RC3 → 4.0.1osvUSpkg:maven/org.apache.shardingsphere/shardingsphere

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-v54f-xcmp-43crDeserialization of Untrusted Data in Apache ShardingSphere2022-02-10ghsa · osvUS
In Apache ShardingSphere(incubator) 4.0.0-RC3 and 4.0.0, the ShardingSphere's web console uses the SnakeYAML library for parsing YAML inputs to load datasource configuration. SnakeYAML allows to unmarshal data to a Java type By using the YAML tag. Unmarshalling untrusted data can lead to security flaws of RCE.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2020-03-11modified 2026-06-17

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+3743 more

references (5)

External citations — patches, advisories, analysis.

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