CVE-2026-85152: undici 8.10.0 omits the destination origin from the cache and request-deduplication keys when the cache or ded

Q: How do I fix CVE-2026-85152?

undici: upgrade to 8.10.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-85152 being exploited?

CVE-2026-85152 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-2026-85152 affect?

CVE-2026-85152 affects undici. Severity is high (CVSS 7.4). undici 8.10.0 omits the destination origin from the cache and request-deduplication keys when the cache or deduplicate interceptor is composed directly onto a Client or Pool. Because the internal cache key falls back to an empty origin stri

Q: How urgent is CVE-2026-85152?

Priority 32/100. High severity; Remotely exploitable, no login, no user action

Routine

HIGH 7.4REMOTEUPGRADE

CVE-2026-85152 is a high-severity flaw (CVSS 7.4) affecting undici. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

undici 8.10.0 omits the destination origin from the cache and request-deduplication keys when the cache or deduplicate interceptor is composed directly onto a Client or Pool. Because the internal cache key falls back to an empty origin string, a cacheable or in-flight response from one upstream origin is returned for a request to a different, trusted origin whenever the method, path, and relevant headers match, which permits cross-origin informat

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.4 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 94%)
CISA exploited list	No
Weakness	CWE-346
Published	2026-09-04
Last modified	2026-09-16

Publisher (CNA): openjs · Vendor: nodejs

Last updated 2026-09-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-04 17:17 UTCPublished CVE record published
2026-09-16 20:41 UTCUpdated Record last modified

nodejs undici UPGRADE

Affected: >= 8.10.0 and < 8.10.2

Fixed in: 8.10.2

Safe to downgrade to: a release before 8.10.0

1. Check installed version

npm ls undici

2. UPGRADE to 8.10.2

npm install undici@">=8.10.2"

3. If no update is available yet, DOWNGRADE to a release before 8.10.0

npm view undici versions npm install undici@"<8.10.0"

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-2026-85152?

undici: upgrade to 8.10.2. Exact commands for each OS are on this page.

Is CVE-2026-85152 being exploited?

CVE-2026-85152 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-2026-85152 affect?

CVE-2026-85152 affects undici. Severity is high (CVSS 7.4). undici 8.10.0 omits the destination origin from the cache and request-deduplication keys when the cache or deduplicate interceptor is composed directly onto a Client or Pool. Because the internal cache key falls back to an empty origin stri

How urgent is CVE-2026-85152?

Priority 32/100. High severity; Remotely exploitable, no login, no user action

Software pages

Node.js vulnerabilities

Related CVEs

CVE-2026-109855 HIGH 7.5 UPGRADE undici is an HTTP client library for Node.js
CVE-2026-109383 HIGH 7.4 UPGRADE undici is an HTTP client library for Node.js
CVE-2026-109829 HIGH 7.4 UPGRADE undici is an HTTP client library for Node.js
CVE-2026-109841 MEDIUM 5.9 UPGRADE undici is an HTTP client library for Node.js
CVE-2026-109869 HIGH 7.5 UPGRADE undici is an HTTP client library for Node.js

References

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