CVE-2016-10548: Arbitrary code execution is possible in reduce-css-calc node module <=1.2.4 through crafted css

Q: How urgent is CVE-2016-10548?

Priority 43/100. Public exploit reference

This month

MEDIUM 6.1UPGRADE

CVE-2016-10548 is a medium-severity flaw (CVSS 6.1) affecting reduce-css-calc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Arbitrary code execution is possible in reduce-css-calc node module <=1.2.4 through crafted css. This makes cross sites scripting (XSS) possible on the client and arbitrary code injection possible on the server and user input is passed to the `calc` function.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-94, CWE-79
Published	2018-05-31
Last modified	2026-06-17

Publisher (CNA): HackerOne · Vendor: reduce-css-calc project

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

Am I affected?

Timeline

2018-05-31 20:29 UTCPublished CVE record published
2026-06-17 00:39 UTCUpdated Record last modified

reduce-css-calc project reduce-css-calc UPGRADE

Affected: <= 1.2.4

Fixed in: newer than 1.2.4

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls reduce-css-calc

2. UPGRADE to newer than 1.2.4

npm install reduce-css-calc@">1.2.4"

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-2016-10548?

reduce-css-calc: upgrade to newer than 1.2.4. Exact commands for each OS are on this page.

Is CVE-2016-10548 being exploited?

CVE-2016-10548 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-2016-10548 affect?

CVE-2016-10548 affects reduce-css-calc. Severity is medium (CVSS 6.1). Arbitrary code execution is possible in reduce-css-calc node module <=1.2.4 through crafted css. This makes cross sites scripting (XSS) possible on the client and arbitrary code injection possible on the server and user input is passed to t

How urgent is CVE-2016-10548?

Priority 43/100. Public exploit reference

References

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