CVE-2020-7961

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.999 · 100 %ileexploit · weaponizedEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 12 exploits · weaponized

Likely / severe?

99.9% (100th) EPSS

CVSS 7.5 · high

Is it mine?

4 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2021-11-03remediate by 2022-05-03

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-27

Liferay Portal Deserialization of Untrusted Data Vulnerability

Deserialization of Untrusted Data in Liferay Portal prior to 7.2.1 CE GA2 allows remote attackers to execute arbitrary code via JSON web services (JSONWS).

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

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

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

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

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USprimaryCWE-502USCWE-502US

exploits (12)

Public proof-of-concept and weaponised exploit code.

exploit/multi/http/liferay_java_unmarshallingLiferay Portal Java Unmarshalling via JSONWS RCEweaponized · metasploit
EDB-48332Liferay Portal - Java Unmarshalling via JSONWS RCE (Metasploit)functional · exploit_db
Alaa-abdulridha/GLiferay-CVE-2020-7961-golangDetect vulns liferay CVE-2020-7961 by Nattroc (EOG Team)PoC · poc_in_github
Alaa-abdulridha/POC-CVE-2020-7961-Token-iteratePOC-CVE-2020-7961-Token-iteratePoC · poc_in_github
CrackerCat/CVE-2020-7961-MassCVE-2020–7961 Mass exploit for Script KiddiesPoC · poc_in_github
ShutdownRepo/CVE-2020-7961Exploit script for CVE-2020-7961PoC · poc_in_github

affected products (4)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Liferay Liferay Portal≤ 7.2.0fstec_bduRU
liferay liferay portal< 7.2.1nvdUScpe:2.3:a:liferay:liferay_portal:*:*:*:*:*:*:*:*
Maven com.liferay.portal:com.liferay.portal.kernel< 4.35.3osvUSpkg:maven/com.liferay.portal/com.liferay.portal.kernel

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-w7pm-cc4v-f3g8Deserialization of Untrusted Data in Liferay Portal2022-05-24ghsa · osvUS
Deserialization of Untrusted Data in Liferay Portal prior to 7.2.1 CE GA2 allows remote attackers to execute arbitrary code via JSON web services (JSONWS).

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd osv NVD CVE.org MITRE

published 2020-03-20modified 2026-06-17

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Related entries.

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+3743 more

references (20)

External citations — patches, advisories, analysis.

scry

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