CVE-2020-7787: This affects all versions of package react-adal

This week

HIGH 8.2REMOTEMITIGATE

CVE-2020-7787 is a high-severity flaw (CVSS 8.2) affecting react-adal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

This affects all versions of package react-adal. It is possible for a specially crafted JWT token and request URL can cause the nonce, session and refresh values to be incorrectly validated, causing the application to treat an attacker-generated JWT token as authentic. The logical defect is caused by how the nonce, session and refresh values are stored in the browser local storage or session storage. Each key is automatically appended by ||. When

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-287
Published	2020-12-09
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: react-adal project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-12-09 17:15 UTCPublished CVE record published
2026-06-17 03:25 UTCUpdated Record last modified

react-adal project react-adal MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls react-adal

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-7787?

react-adal: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-7787 being exploited?

CVE-2020-7787 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-7787 affect?

CVE-2020-7787 affects react-adal. Severity is high (CVSS 8.2). This affects all versions of package react-adal. It is possible for a specially crafted JWT token and request URL can cause the nonce, session and refresh values to be incorrectly validated, causing the application to treat an attacker-gene

How urgent is CVE-2020-7787?

Priority 56/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

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References

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