CVE-2024-10491: A vulnerability has been identified in the Express response.links function, allowing for arbitrary resource in

Q: How do I fix CVE-2024-10491?

express: upgrade to 3.21.5. Exact commands for each OS are on this page.

Q: Is CVE-2024-10491 being exploited?

CVE-2024-10491 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-2024-10491 affect?

CVE-2024-10491 affects express. Severity is medium (CVSS 4.0). A vulnerability has been identified in the Express response.links function, allowing for arbitrary resource injection in the Link header when unsanitized data is used. The issue arises from improper sanitization in `Link` header values, wh

Q: How urgent is CVE-2024-10491?

Priority 34/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 4.0REMOTEUPGRADE

CVE-2024-10491 is a medium-severity flaw (CVSS 4.0) affecting express. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been identified in the Express response.links function, allowing for arbitrary resource injection in the Link header when unsanitized data is used. The issue arises from improper sanitization in `Link` header values, which can allow a combination of characters like `,`, `;`, and `<>` to preload malicious resources. This vulnerability is especially relevant for dynamic parameters.

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	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-74
Published	2024-10-29
Last modified	2026-06-17

Publisher (CNA): HeroDevs · Vendor: openjsf

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

Am I affected?

Timeline

2024-10-29 17:15 UTCPublished CVE record published
2026-06-17 06:55 UTCUpdated Record last modified

openjsf express UPGRADE

Affected: >= 3.0.0 and < 3.21.5

Fixed in: 3.21.5

Safe to downgrade to: a release before 3.0.0

1. Check installed version

npm ls express

2. UPGRADE to 3.21.5

npm install express@">=3.21.5"

3. If no update is available yet, DOWNGRADE to a release before 3.0.0

npm view express versions npm install express@"<3.0.0"

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-2024-10491?

express: upgrade to 3.21.5. Exact commands for each OS are on this page.

Is CVE-2024-10491 being exploited?

CVE-2024-10491 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-2024-10491 affect?

CVE-2024-10491 affects express. Severity is medium (CVSS 4.0). A vulnerability has been identified in the Express response.links function, allowing for arbitrary resource injection in the Link header when unsanitized data is used. The issue arises from improper sanitization in `Link` header values, wh

How urgent is CVE-2024-10491?

Priority 34/100. Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-43796 MEDIUM 5.0 UPGRADE Express.js minimalist web framework for node
CVE-2024-29041 MEDIUM 6.1 UPGRADE Express.js minimalist web framework for node

References

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