CVE-2026-88059: Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript

Q: How do I fix CVE-2026-88059?

angular: upgrade to 20.3.28, 21.2.20, 22.1.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-88059 being exploited?

CVE-2026-88059 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-88059 affect?

CVE-2026-88059 affects angular. Severity is medium (CVSS 4.0). Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.28, 21.2.20, and 22.1.1, Angular's @angular/common HttpTransferCache can cache an authenticate

Q: How urgent is CVE-2026-88059?

Priority 31/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 4.0REMOTEUPGRADE

CVE-2026-88059 is a medium-severity flaw (CVSS 4.0) affecting angular. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.28, 21.2.20, and 22.1.1, Angular's @angular/common HttpTransferCache can cache an authenticated response when Server-Side Rendering (SSR) and hydration use a hierarchical HttpClient configured with withRequestsMadeViaParent. The child TransferCache evaluates an initially anonymous request before delegat

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	4.0 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Weakness	CWE-200, CWE-524
Published	2026-09-10
Last modified	2026-09-29

Publisher (CNA): GitHub, Inc. · Vendor: angular

Last updated 2026-09-29 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-10 19:17 UTCPublished CVE record published
2026-09-29 21:09 UTCUpdated Record last modified

angular angular UPGRADE

Affected: >= 19.0.0 and <= 19.2.25 · >= 20.0.0 and < 20.3.28 · >= 21.0.0 and < 21.2.20 · >= 22.0.0 and < 22.1.1

Fixed in: 20.3.28, 21.2.20, 22.1.1

Safe to downgrade to: a release before 19.0.0

1. Check installed version

npm ls angular

2. UPGRADE to 20.3.28

npm install angular@">=20.3.28"

3. If no update is available yet, DOWNGRADE to a release before 19.0.0

npm view angular versions npm install angular@"<19.0.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-88059?

angular: upgrade to 20.3.28, 21.2.20, 22.1.1. Exact commands for each OS are on this page.

Is CVE-2026-88059 being exploited?

CVE-2026-88059 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-2026-88059 affect?

CVE-2026-88059 affects angular. Severity is medium (CVSS 4.0). Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.28, 21.2.20, and 22.1.1, Angular's @angular/common HttpTransferCache can cache an authenticate

How urgent is CVE-2026-88059?

Priority 31/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Angular vulnerabilities

Related CVEs

CVE-2026-88056 CRITICAL 9.1 UPGRADE Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript
CVE-2026-88057 MEDIUM 6.1 UPGRADE Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript
CVE-2026-88058 MEDIUM 6.1 UPGRADE Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript
CVE-2026-88060 MEDIUM 6.1 UPGRADE Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript
CVE-2026-69151 MEDIUM 6.1 UPGRADE Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript

References

← Back to latest CVEs