CVE-2020-28500: Regular Expression Denial of Service (ReDoS)

20

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 7.3% (30-day exploitation probability)+14
Technical severity (medium)+3
Automatable exploitation (SSVC)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

7.34%

ahead of 94% of scored CVEs · Oct 14, 2026

Affects

Lodash

Lodash and 18 more

CVSS base

5.3

Medium · 3 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

Yes

can an attacker script the kill-chain steps

Technical impact

Partial

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

Documented patch — cert-portal.siemens.com (NIST National Vulnerability Database)
Documented patch — github.com (NIST National Vulnerability Database)
Documented patch — www.oracle.com (NIST National Vulnerability Database)
Documented patch — www.oracle.com (NIST National Vulnerability Database)
Documented patch — www.oracle.com (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Lodash Lodash, Oracle Banking Corporate Lending Process Management, Oracle Banking Credit Facilities Process Management…).
The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
Apply the fixed version or the patch documented under Remediation.
EPSS ahead of 94% of scored CVEs: prioritize it in the patch queue.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Lodash	Lodash	< 4.17.21	Vulnerable	NIST National Vulnerability Database
Oracle	Banking Corporate Lending Process Management	version 14.5.0version 14.3.0version 14.2.0	Vulnerable	NIST National Vulnerability Database
Oracle	Banking Credit Facilities Process Management	version 14.3.0version 14.2.0version 14.5.0	Vulnerable	NIST National Vulnerability Database
Oracle	Banking Extensibility Workbench	version 14.5.0version 14.3.0version 14.2.0	Vulnerable	NIST National Vulnerability Database
Oracle	Banking Supply Chain Finance	version 14.5.0version 14.3.0version 14.2.0	Vulnerable	NIST National Vulnerability Database
Oracle	Banking Trade Finance Process Management	version 14.5.0version 14.3.0version 14.2.0	Vulnerable	NIST National Vulnerability Database
Oracle	Communications Cloud Native Core Policy	version 1.11.0	Vulnerable	NIST National Vulnerability Database
Oracle	Communications Design Studio	version 7.4.2	Vulnerable	NIST National Vulnerability Database
Oracle	Communications Services Gatekeeper	version 7.0	Vulnerable	NIST National Vulnerability Database
Oracle	Communications Session Border Controller	version 9.0version 8.4	Vulnerable	NIST National Vulnerability Database
Oracle	Enterprise Communications Broker	version 3.3.0version 3.2.0	Vulnerable	NIST National Vulnerability Database
Oracle	Financial Services Crime And Compliance Management Studio	version 8.0.8.3.0version 8.0.8.2.0	Vulnerable	NIST National Vulnerability Database
Oracle	Health Sciences Data Management Workbench	version 3.0.0.0version 2.5.2.1	Vulnerable	NIST National Vulnerability Database
Oracle	Jd Edwards Enterpriseone Tools	< 9.2.6.1	Vulnerable	NIST National Vulnerability Database
Oracle	Peoplesoft Enterprise Peopletools	version 8.58version 8.59	Vulnerable	NIST National Vulnerability Database
Oracle	Primavera Gateway	≥ 19.12.0 and ≤ 19.12.11≥ 17.12.0 and ≤ 17.12.11≥ 18.8.0 and ≤ 18.8.12≥ 20.12.0 and ≤ 20.12.7	Vulnerable	NIST National Vulnerability Database
Oracle	Primavera Unifier	version 20.12≥ 17.7 and ≤ 17.12version 18.8version 19.12	Vulnerable	NIST National Vulnerability Database
Oracle	Retail Customer Management And Segmentation Foundation	version 19.0	Vulnerable	NIST National Vulnerability Database
Siemens	Sinec Ins	< 1.0version 1.0version 1.0-sp1	Vulnerable	NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
5.3	CVSS 3.1	Medium	3.9	1.4	report@snyk.io via NIST National Vulnerability Database
5.3	CVSS 3.1	Medium	3.9	1.4	nvd@nist.gov via NIST National Vulnerability Database
5.3	CVSS 3.1	Medium	—	—	snyk via CVE Program (cve.org) e CISA ADP
5.0	CVSS 2.0	Medium	10.0	2.9	nvd@nist.gov via NIST National Vulnerability Database

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L (score shown at the top: nvd@nist.gov)

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 7.34%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).

web/proxy/WAF logsnetwork IDS/IPS

Timeline

What happened to this CVE, newest first.

2026
SSVC assessment updated
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 13, 2026
Fix documented
Oct 13, 2026 · NIST National Vulnerability Database
CVSS changed · 5.3
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · → Modified
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
2021
CVE published
Feb 15, 2021 · snyk

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

14 on the record

cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf
Patch, Third Party Advisory, x_refsource_CONFIRM, NIST National Vulnerability Database
www.oracle.com/security-alerts/cpujul2022.html
Patch, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
www.oracle.com/security-alerts/cpujan2022.html
Patch, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
github.com/lodash/lodash/pull/5065
Patch, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
www.oracle.com/security-alerts/cpuoct2021.html
Patch, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
www.oracle.com//security-alerts/cpujul2021.html
Not Applicable, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074894
Exploit, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
github.com/lodash/lodash/blob/npm/trimEnd.js%23L8
Broken Link, x_refsource_MISC, NIST National Vulnerability Database
snyk.io/vuln/SNYK-JS-LODASH-1018905
Exploit, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074892
Exploit, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBLODASH-1074895
Exploit, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
snyk.io/vuln/SNYK-JAVA-ORGFUJIONWEBJARS-1074896
Exploit, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
security.netapp.com/advisory/ntap-20210312-0006/
Third Party Advisory, x_refsource_CONFIRM, NIST National Vulnerability Database
snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074893
Exploit, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database

Elsewhere on this site

Lodash
every CVE for this vendor

Related CVEs (same products)

High CVE-2026-83017 Improper Access Control in Oracle Peoplesoft Enterprise Peopletools Sep 15, 2026
High CVE-2026-83019 Improper Access Control in Oracle Peoplesoft Enterprise Peopletools Sep 15, 2026
High CVE-2026-83014 Improper Access Control in Oracle Peoplesoft Enterprise Peopletools Sep 15, 2026
High CVE-2026-83018 Improper Access Control in Oracle Peoplesoft Enterprise Peopletools Sep 15, 2026
High CVE-2026-83015 Improper Access Control in Oracle Peoplesoft Enterprise Peopletools Sep 15, 2026
High CVE-2026-83016 Improper Access Control in Oracle Peoplesoft Enterprise Peopletools Sep 15, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2020-28500 is "Regular Expression Denial of Service (ReDoS)", rated Medium. It affects Lodash (Lodash); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 5.3 describes technical severity. EPSS 7.34% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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